Which term describes the set of laws and regulations that protect air quality in the United States?

• A. Environmental Protection Agency
• B. Department of Energy
• C. National Weather Service
• D. Agricultural Research Service

Answer: (A)

Air quality protection in the United States is handled by the Environmental Protection Agency, the federal agency responsible for setting and enforcing nationwide environmental standards, including air quality through programs under the Clean Air Act. It develops national ambient air quality standards, regulates emissions from industries and vehicles, and works with states to implement pollution-reduction plans. The other agencies have different primary roles: the Department of Energy focuses on energy policy and efficiency, the National Weather Service provides weather forecasts and warnings, and the Agricultural Research Service conducts agricultural science. None of those agencies serves as the central regulator for air quality in the way the Environmental Protection Agency does.