Responsible travel that conserves the environment and respects local cultures.

Turning waste materials into new, useful products creatively.

Environment and Sustainable Living

Tổng câu hỏi trong bộ đề

Environment and Sustainable Living

Câu hỏi 1: What is the main cause of global warming?

A: Excess greenhouse gases released from human activities.
B: Natural cooling of the Earth.
C: Reduction in industrial production.
D: Decrease in solar radiation.

Đáp án: A

Câu hỏi 2: Why is using renewable energy important for sustainable living?

A: It reduces dependence on fossil fuels and lowers carbon emissions.
B: It increases the cost of living unnecessarily.
C: It replaces all forms of transportation.
D: It reduces food production globally.

Đáp án: A

Câu hỏi 3: What is meant by sustainable living?

A: Using resources in ways that meet present needs without harming future generations.
B: Using as much as possible before supplies run out.
C: Focusing only on industrial development.
D: Ignoring environmental protection efforts.

Đáp án: A

Câu hỏi 4: How does planting trees help protect the environment?

A: Trees absorb carbon dioxide and provide oxygen.
B: Trees increase greenhouse gas levels.
C: Trees only serve decorative purposes.
D: Trees replace all other energy sources.

Đáp án: A

Câu hỏi 5: Why is water conservation necessary for sustainable living?

A: It ensures fresh water is available for future needs and prevents shortages.
B: It reduces the importance of water in daily life.
C: It increases water pollution.
D: It replaces the need for rainfall.

Đáp án: A

Câu hỏi 6: What is one negative effect of deforestation?

A: Loss of biodiversity and disruption of ecosystems.
B: Increase in available land for nature reserves.
C: Reduction of air pollution.
D: Promotion of healthy living conditions.

Đáp án: A

Câu hỏi 7: Why is reducing single-use plastic important for the environment?

A: It minimizes plastic waste that pollutes land and oceans.
B: It focuses only on increasing consumer costs.
C: It limits production of all types of materials.
D: It increases wildlife population.

Đáp án: A

Câu hỏi 8: How does recycling help conserve natural resources?

A: It allows materials to be reused instead of using new raw materials.
B: It increases energy consumption.
C: It reduces the quality of products.
D: It replaces water usage in agriculture.

Đáp án: A

Câu hỏi 9: What is the greenhouse effect?

A: Trapping of heat in the Earth’s atmosphere by certain gases.
B: Cooling of the planet due to wind currents.
C: Increase in snowfall and ice formation globally.
D: Reduction of sunlight reaching the Earth’s surface.

Đáp án: A

Câu hỏi 10: Why is protecting endangered species important for the environment?

A: It maintains biodiversity and ecosystem balance.
B: It limits food chain development.
C: It increases pollution levels.
D: It replaces sustainable farming techniques.

Đáp án: A

Câu hỏi 11: What is one effect of climate change on weather patterns?

A: Increased frequency of extreme weather events like storms and droughts.
B: Stabilization of global temperatures.
C: Reduction in desert areas.
D: Increase in consistent rainfall worldwide.

Đáp án: A

Câu hỏi 12: Why should people switch to public transportation or bicycles?

A: It reduces air pollution and traffic congestion.
B: It increases personal expenses unnecessarily.
C: It limits city development.
D: It replaces all road maintenance.

Đáp án: A

Câu hỏi 13: How does composting contribute to sustainable living?

A: It recycles organic waste into nutrient-rich soil.
B: It increases landfill waste.
C: It reduces the need for food production.
D: It limits water usage.

Đáp án: A

Câu hỏi 14: What is the purpose of Earth Hour?

A: To raise awareness about energy conservation by turning off lights for one hour.
B: To celebrate industrial development.
C: To increase global water usage.
D: To replace all power sources with candles.

Đáp án: A

Câu hỏi 15: Why is limiting industrial waste important for environmental protection?

A: It prevents soil, air, and water pollution from harmful chemicals.
B: It focuses only on recycling metals.
C: It replaces sustainable agriculture.
D: It reduces wildlife habitats.

Đáp án: A

Câu hỏi 16: How does using energy-efficient appliances help the environment?

A: They consume less electricity, reducing power plant emissions.
B: They increase electricity bills.
C: They focus only on cooling devices.
D: They replace all traditional appliances immediately.

Đáp án: A

Câu hỏi 17: What is carbon footprint?

A: The total amount of greenhouse gases produced by an individual, organization, or product.
B: The amount of carbon found in forests.
C: A type of renewable energy.
D: A measurement of forest size.

Đáp án: A

Câu hỏi 18: Why is waste sorting important in recycling programs?

A: It separates materials for proper recycling and reduces contamination.
B: It increases landfill size.
C: It limits community participation.
D: It replaces composting completely.

Đáp án: A

Câu hỏi 19: How does turning off unused electrical devices support energy conservation?

A: It saves electricity and reduces unnecessary power usage.
B: It damages electronic devices.
C: It increases electricity production needs.
D: It replaces solar panels.

Đáp án: A

Câu hỏi 20: What is eco-tourism?

A: Responsible travel that conserves the environment and respects local cultures.
B: Travel focusing only on luxury hotels.
C: Tourism that increases waste and pollution.
D: A form of industrial transportation.

Đáp án: A

Câu hỏi 21: Why is using reusable bags better than single-use plastic bags?

A: It reduces plastic waste and protects wildlife from pollution.
B: It increases shopping costs unnecessarily.
C: It limits access to modern products.
D: It replaces all traditional shopping methods.

Đáp án: A

Câu hỏi 22: How does solar energy support sustainable living?

A: It provides renewable power without producing greenhouse gases.
B: It increases dependency on fossil fuels.
C: It limits use to large factories only.
D: It replaces recycling programs completely.

Đáp án: A

Câu hỏi 23: What is the main purpose of the 3Rs: Reduce, Reuse, Recycle?

A: To minimize waste and conserve resources in daily life.
B: To replace local traditions.
C: To increase the use of non-renewable resources.
D: To focus only on industrial areas.

Đáp án: A

Câu hỏi 24: Why is reducing food waste important for the environment?

A: It conserves energy, water, and reduces methane from landfills.
B: It increases supermarket sales.
C: It limits agricultural production unnecessarily.
D: It replaces healthy eating habits.

Đáp án: A

Câu hỏi 25: How does afforestation benefit the planet?

A: It increases forest cover, helping absorb carbon dioxide and protect biodiversity.
B: It focuses only on wood production.
C: It limits urban development.
D: It reduces soil quality.

Đáp án: A

Câu hỏi 26: What is the best way to reduce electronic waste?

A: Repair, donate, or recycle old electronic devices instead of throwing them away.
B: Burn unused electronics.
C: Store all old electronics at home forever.
D: Replace devices every month unnecessarily.

Đáp án: A

Câu hỏi 27: Why is conserving marine life important for environmental balance?

A: It maintains food chains and supports ocean ecosystems.
B: It focuses only on aquariums.
C: It limits international trade.
D: It replaces farming industries.

Đáp án: A

Câu hỏi 28: How do green roofs help in sustainable city design?

A: They reduce heat, absorb rainwater, and improve air quality in urban areas.
B: They focus only on building decoration.
C: They replace transportation systems.
D: They reduce building safety.

Đáp án: A

Câu hỏi 29: Why is protecting wetlands crucial for the environment?

A: Wetlands filter water, provide habitats, and prevent flooding.
B: They limit plant growth.
C: They increase desert areas.
D: They replace lakes and rivers.

Đáp án: A

Câu hỏi 30: How does walking or cycling to school contribute to sustainable living?

A: It reduces carbon emissions and promotes a healthy lifestyle.
B: It increases traffic congestion.
C: It limits personal freedom unnecessarily.
D: It replaces public transportation entirely.

Đáp án: A

Câu hỏi 31: What is the main advantage of biodegradable products?

A: They break down naturally without harming the environment.
B: They increase landfill pollution.
C: They limit industrial production.
D: They replace renewable energy usage.

Đáp án: A

Câu hỏi 32: Why is protecting the ozone layer important for life on Earth?

A: It blocks harmful ultraviolet radiation from the sun.
B: It increases greenhouse gas levels.
C: It limits weather changes.
D: It replaces solar energy systems.

Đáp án: A

Câu hỏi 33: How does saving paper contribute to environmental protection?

A: It reduces deforestation and energy used in paper production.
B: It increases school expenses unnecessarily.
C: It replaces electronic communication.
D: It limits creativity in education.

Đáp án: A

Câu hỏi 34: Why is reducing meat consumption considered eco-friendly?

A: It lowers greenhouse gas emissions from livestock farming.
B: It limits protein intake dangerously.
C: It replaces all traditional food cultures.
D: It reduces farming employment opportunities.

Đáp án: A

Câu hỏi 35: How do LED lights support energy conservation?

A: They use less electricity and last longer than traditional bulbs.
B: They reduce lighting quality.
C: They increase heat production.
D: They replace solar panels.

Đáp án: A

Câu hỏi 36: Why is global cooperation necessary to solve environmental problems?

A: Environmental issues like climate change affect all countries equally.
B: It limits national policies unnecessarily.
C: It replaces local government decisions.
D: It focuses only on industrial countries.

Đáp án: A

Câu hỏi 37: How does reducing packaging waste support sustainability?

A: It decreases landfill size and resource usage in production.
B: It limits product availability unnecessarily.
C: It replaces online shopping entirely.
D: It reduces product safety.

Đáp án: A

Câu hỏi 38: Why is renewable energy called “clean energy”?

A: It produces no harmful emissions during use.
B: It eliminates all energy needs completely.
C: It focuses only on fashion industries.
D: It limits energy supply to small communities.

Đáp án: A

Câu hỏi 39: What is upcycling?

A: Turning waste materials into new, useful products creatively.
B: Throwing away old products quickly.
C: Replacing all recycling centers with landfills.
D: Storing old products indefinitely.

Đáp án: A

Câu hỏi 40: How does eco-friendly architecture benefit modern cities?

A: It combines energy-saving design, renewable materials, and green spaces.
B: It limits access to affordable housing.
C: It replaces public parks entirely.
D: It increases construction waste.

Đáp án: A

Câu hỏi 41: Why is reducing air pollution essential for public health?

A: It lowers respiratory diseases and improves overall air quality.
B: It limits industrial development unnecessarily.
C: It replaces medical treatment completely.
D: It increases greenhouse gas emissions.

Đáp án: A

Câu hỏi 42: How do smart grids contribute to sustainable living?

A: They optimize energy distribution, reducing waste and improving efficiency.
B: They focus only on entertainment systems.
C: They replace renewable energy completely.
D: They limit access to electricity in rural areas.

Đáp án: A

Câu hỏi 43: Why is using eco-friendly detergents better for the environment?

A: They reduce water pollution and harm to aquatic life.
B: They eliminate the need for cleaning products.
C: They focus only on fragrance.
D: They limit product availability.

Đáp án: A

Câu hỏi 44: How does environmental education support sustainable living?

A: It raises awareness and promotes responsible behavior in society.
B: It focuses only on university students.
C: It limits interest in technology.
D: It replaces other school subjects.

Đáp án: A

Câu hỏi 45: Why is protecting coral reefs important for marine ecosystems?

A: They provide habitat for countless species and protect coastal areas.
B: They limit ocean biodiversity.
C: They focus only on tourism industries.
D: They replace deep-sea fishing.

Đáp án: A

Câu hỏi 46: How does using public recycling bins help the environment?

A: It encourages proper waste sorting and reduces littering.
B: It increases landfill waste.
C: It replaces private recycling programs.
D: It limits individual responsibility.

Đáp án: A

Câu hỏi 47: Why is monitoring deforestation rates important?

A: It helps prevent illegal logging and protects natural habitats.
B: It focuses only on forest tourism.
C: It limits building materials.
D: It replaces renewable energy sources.

Đáp án: A

Câu hỏi 48: How do green public transportation systems reduce carbon emissions?

A: By using electric or hybrid vehicles instead of fossil fuels.
B: By focusing only on luxury transport.
C: By limiting travel distances unnecessarily.
D: By increasing private car use.

Đáp án: A

Câu hỏi 49: Why is it important to protect natural parks and reserves?

A: They preserve wildlife, natural beauty, and biodiversity for future generations.
B: They limit access to natural resources.
C: They replace urban development entirely.
D: They reduce eco-tourism opportunities.

Đáp án: A

Câu hỏi 50: How does reducing household waste contribute to environmental protection?

A: It lowers landfill pollution and conserves resources.
B: It limits access to basic products.
C: It replaces all shopping habits.
D: It increases waste management costs.

Đáp án: A

Câu hỏi 51: Why is climate action considered a global priority?

A: Climate change affects health, economy, and ecosystems worldwide.
B: It focuses only on cold countries.
C: It limits agricultural development.
D: It replaces all local government functions.

Đáp án: A

Câu hỏi 52: How does water-efficient irrigation support sustainable farming?

A: It conserves water and improves crop yields with less waste.
B: It limits farming to certain regions only.
C: It replaces all traditional farming tools.
D: It increases the need for fertilizers.

Đáp án: A

Câu hỏi 53: Why is developing green technologies important for future industries?

A: It promotes sustainable growth while protecting the environment.
B: It limits innovation unnecessarily.
C: It focuses only on large corporations.
D: It reduces employment opportunities.

Đáp án: A

Câu hỏi 54: How do local community clean-up events benefit the environment?

A: They reduce litter, raise awareness, and improve public spaces.
B: They focus only on private properties.
C: They replace government waste services completely.
D: They limit social activities.

Đáp án: A

Câu hỏi 55: Why is using reusable water bottles considered eco-friendly?

A: It reduces plastic waste from single-use bottles.
B: It increases water usage.
C: It limits hydration options.
D: It replaces filtered water systems.

Đáp án: A

Câu hỏi 56: How does rainwater harvesting contribute to sustainable water use?

A: It collects rain for non-drinking purposes like gardening or cleaning.
B: It replaces municipal water systems.
C: It limits access to clean drinking water.
D: It increases roof maintenance.

Đáp án: A

Câu hỏi 57: Why is using natural lighting in buildings beneficial?

A: It saves energy and improves indoor environments.
B: It increases electricity bills.
C: It limits building safety.
D: It replaces artificial lights entirely.

Đáp án: A

Câu hỏi 58: How does reducing paper usage support forest conservation?

A: It reduces the demand for tree cutting and promotes digital alternatives.
B: It limits educational resources unnecessarily.
C: It focuses only on artistic products.
D: It replaces all traditional communication forms.

Đáp án: A

Câu hỏi 59: Why is using bicycles promoted in sustainable cities?

A: Bicycles produce no emissions and help reduce traffic.
B: They increase parking space problems.
C: They limit city size expansion.
D: They replace all public transport.

Đáp án: A

Câu hỏi 60: How do energy-saving habits in schools contribute to sustainability?

A: They teach responsibility and reduce unnecessary energy use.
B: They replace learning time with maintenance tasks.
C: They limit the use of computers.
D: They increase school fees.

Đáp án: A

Câu hỏi 61: Why is eco-friendly product labeling important for consumers?

A: It helps buyers make informed choices about sustainability.
B: It focuses only on product appearance.
C: It limits product quality.
D: It replaces nutrition labels.

Đáp án: A

Câu hỏi 62: How does reducing car idling time help protect the environment?

A: It lowers fuel waste and reduces air pollution.
B: It increases engine lifespan unnecessarily.
C: It focuses only on race cars.
D: It replaces all fuel types with electricity.

Đáp án: A

Câu hỏi 63: Why is saving energy at home considered a global responsibility?

A: Collective actions reduce overall resource consumption worldwide.
B: It replaces local government policies.
C: It limits personal comfort unnecessarily.
D: It reduces industrial energy demand completely.

Đáp án: A

Câu hỏi 64: How do green belts in urban areas benefit cities?

A: They provide fresh air, reduce heat, and improve residents’ well-being.
B: They focus only on private land ownership.
C: They limit housing developments unnecessarily.
D: They replace industrial zones entirely.

Đáp án: A

Câu hỏi 65: Why is banning microplastics important for marine environments?

A: Microplastics harm aquatic life and enter the food chain.
B: They increase recycling costs.
C: They focus only on luxury goods.
D: They replace natural fibers in clothing.

Đáp án: A

Câu hỏi 66: How does reducing fashion industry waste support environmental protection?

A: It minimizes pollution from clothing production and disposal.
B: It limits fashion creativity.
C: It replaces cultural clothing traditions.
D: It increases clothing prices dramatically.

Đáp án: A

Câu hỏi 67: Why is protecting mountain ecosystems necessary?

A: They provide water sources, biodiversity, and climate regulation.
B: They focus only on tourism development.
C: They limit agricultural growth.
D: They replace coastal ecosystems.

Đáp án: A

Câu hỏi 68: How does developing public green spaces improve sustainable living?

A: It enhances air quality, recreation, and community health.
B: It limits industrial production.
C: It focuses only on city center areas.
D: It reduces interest in outdoor activities.

Đáp án: A

Câu hỏi 69: Why is understanding sustainable consumer behavior important?

A: Buying eco-friendly products reduces resource waste and pollution.
B: It replaces all traditional shopping habits.
C: It limits consumer freedom unnecessarily.
D: It focuses only on online sales.

Đáp án: A

Câu hỏi 70: How does reforestation combat climate change?

A: Planting trees absorbs carbon dioxide and cools the environment.
B: It increases wildfire risks unnecessarily.
C: It replaces renewable energy needs.
D: It limits land for agriculture.

Đáp án: A

Câu hỏi 71: Why is banning toxic pesticides necessary for environmental health?

A: They harm wildlife, water supplies, and soil quality.
B: They increase crop production uncontrollably.
C: They focus only on small farms.
D: They replace organic farming entirely.

Đáp án: A

Câu hỏi 72: How does promoting zero-waste lifestyles contribute to global sustainability?

A: It reduces landfill use and maximizes recycling and reusing materials.
B: It focuses only on product design.
C: It limits economic development unnecessarily.
D: It replaces renewable energy policies.

Đáp án: A

Câu hỏi 73: Why is protecting biodiversity crucial for sustainable ecosystems?

A: Each species plays a role in maintaining ecological balance.
B: It limits focus to one animal species.
C: It replaces scientific research needs.
D: It reduces forest areas unnecessarily.

Đáp án: A

Câu hỏi 74: How does using biodegradable packaging help the planet?

A: It decomposes naturally, reducing plastic pollution.
B: It limits packaging design creativity.
C: It focuses only on luxury products.
D: It replaces customer service entirely.

Đáp án: A

Câu hỏi 75: Why is investing in renewable energy research important?

A: It ensures cleaner, more efficient energy sources for the future.
B: It focuses only on solar power.
C: It limits government policies unnecessarily.
D: It replaces energy conservation habits.

Đáp án: A

Câu hỏi 76: How does growing local food reduce environmental impact?

A: It cuts down transportation emissions and supports local farmers.
B: It increases international trade unnecessarily.
C: It limits food variety globally.
D: It replaces all agricultural exports.

Đáp án: A

Câu hỏi 77: Why is supporting eco-friendly tourism a sustainable choice?

A: It protects natural sites while promoting cultural respect and local economies.
B: It focuses only on entertainment resorts.
C: It limits tourist freedom unnecessarily.
D: It replaces historical education programs.

Đáp án: A

Câu hỏi 78: How does using cloud storage reduce environmental waste?

A: It minimizes paper use and energy spent on physical storage devices.
B: It focuses only on large corporations.
C: It limits information security unnecessarily.
D: It replaces all offline data systems.

Đáp án: A

Câu hỏi 79: Why is understanding natural disaster risks part of sustainable living?

A: It prepares communities to protect lives, property, and ecosystems.
B: It focuses only on national governments.
C: It limits construction methods unnecessarily.
D: It replaces all emergency services.

Đáp án: A

Câu hỏi 80: How does developing urban farming support city sustainability?

A: It reduces food transportation needs and provides fresh produce locally.
B: It limits market access.
C: It focuses only on rooftop gardens.
D: It replaces traditional countryside farms.

Đáp án: A

Câu hỏi 81: Why is promoting sustainable fashion important for the environment?

A: It reduces textile waste, chemical pollution, and overconsumption.
B: It limits global trade opportunities.
C: It replaces national clothing traditions.
D: It focuses only on handmade products.

Đáp án: A

Câu hỏi 82: How does smart home technology support energy efficiency?

A: It automates lights, heating, and appliances to reduce waste.
B: It increases energy bills unnecessarily.
C: It limits household comfort.
D: It replaces human control completely.

Đáp án: A

Câu hỏi 83: Why is international environmental cooperation necessary?

A: Shared problems like climate change require shared solutions.
B: It focuses only on diplomatic relations.
C: It limits national independence.
D: It replaces scientific research completely.

Đáp án: A

Câu hỏi 84: How does monitoring air quality protect public health?

A: It alerts communities to harmful pollution levels.
B: It focuses only on industrial areas.
C: It replaces all healthcare services.
D: It limits outdoor activity unnecessarily.

Đáp án: A

Câu hỏi 85: Why is protecting rivers and lakes essential for sustainable living?

A: They provide drinking water, irrigation, and ecosystem habitats.
B: They focus only on transportation.
C: They replace all other water sources.
D: They limit renewable energy development.

Đáp án: A

Câu hỏi 86: How does using natural building materials support eco-friendly construction?

A: It reduces carbon footprint and supports healthier indoor environments.
B: It limits modern design options unnecessarily.
C: It focuses only on rural homes.
D: It replaces all concrete products.

Đáp án: A

Câu hỏi 87: Why is waste-to-energy technology a sustainable solution?

A: It converts waste into usable energy while reducing landfill volume.
B: It increases fossil fuel dependency.
C: It limits recycling options.
D: It focuses only on luxury developments.

Đáp án: A

Câu hỏi 88: How does international wildlife protection help ecosystems?

A: It ensures species survival and maintains balance in food chains.
B: It focuses only on zoos.
C: It limits national economic growth unnecessarily.
D: It replaces local environmental policies.

Đáp án: A

Câu hỏi 89: Why is encouraging youth participation in sustainability efforts important?

A: It builds future leaders committed to protecting the planet.
B: It limits educational opportunities unnecessarily.
C: It focuses only on social media campaigns.
D: It replaces national government programs.

Đáp án: A

Câu hỏi 90: How does using energy labels on appliances support smart consumer choices?

A: It helps buyers choose products with lower energy consumption.
B: It focuses only on refrigerator sales.
C: It limits product availability.
D: It replaces warranty information.

Đáp án: A

Câu hỏi 91: Why is regulating industrial emissions crucial for environmental safety?

A: It reduces air, water, and soil pollution from factories.
B: It focuses only on employee health.
C: It limits factory productivity unnecessarily.
D: It replaces all renewable energy use.

Đáp án: A

Câu hỏi 92: How does protecting polar regions contribute to climate stability?

A: Ice caps regulate global temperature and sea levels.
B: It focuses only on Arctic tourism.
C: It limits international cooperation.
D: It replaces ocean preservation efforts.

Đáp án: A

Câu hỏi 93: Why is banning illegal wildlife trade important for sustainability?

A: It protects endangered species and ecosystem balance.
B: It increases poaching risks.
C: It focuses only on cultural products.
D: It limits international travel.

Đáp án: A

Câu hỏi 94: How does integrating green education into schools benefit society?

A: It teaches children responsibility for the environment from an early age.
B: It replaces standard science classes.
C: It limits creativity unnecessarily.
D: It focuses only on gardening lessons.

Đáp án: A

Câu hỏi 95: Why is recycling metal products valuable for resource conservation?

A: Metals can be reused indefinitely, saving mining resources.
B: It limits product durability.
C: It focuses only on artistic use.
D: It replaces construction entirely.

Đáp án: A

Câu hỏi 96: How does understanding climate science support sustainable policy-making?

A: It provides evidence for decisions on energy, agriculture, and conservation.
B: It focuses only on academic debates.
C: It limits economic growth unnecessarily.
D: It replaces all political discussions.

Đáp án: A

Câu hỏi 97: Why is promoting local markets a sustainable consumer choice?

A: It supports regional economies and reduces transport emissions.
B: It limits international trade opportunities.
C: It focuses only on handmade products.
D: It replaces large supermarkets entirely.

Đáp án: A

Câu hỏi 98: How does using recycled materials in construction reduce environmental impact?

A: It conserves resources and reduces landfill waste.
B: It limits design flexibility.
C: It focuses only on low-cost housing.
D: It replaces all modern materials completely.

Đáp án: A

Câu hỏi 99: Why is reducing electronic device usage important for sustainability?

A: It lowers energy demand and reduces e-waste.
B: It limits education opportunities unnecessarily.
C: It focuses only on entertainment restrictions.
D: It replaces internet usage entirely.

Đáp án: A

Câu hỏi 100: How does promoting sustainable fisheries protect ocean ecosystems?

A: It ensures fish populations remain healthy for future generations.
B: It focuses only on commercial fishing bans.
C: It limits food availability unnecessarily.
D: It replaces all marine industries.

Đáp án: A

Đã sao chép!!!