Which act established federal regulations on air quality?

• A. Clean Air Act
• B. National Environmental Policy Act
• C. Endangered Species Act
• D. Safe Drinking Water Act

Answer: (A)

The idea being tested is how the federal government regulates air quality across the country. The Clean Air Act is the framework that does this. It gave the federal government, primarily the EPA, authority to set national ambient air quality standards for pollutants deemed harmful, regulate emissions from major sources like factories and cars, and require states to develop plans to meet those standards. The act was strengthened in major amendments in 1970 and 1990 to broaden protections, improve enforcement, and tackle issues like smog, acid rain, and toxic air pollutants.

The other laws focus on different environmental concerns. The National Environmental Policy Act requires federal agencies to evaluate environmental effects of their actions. The Endangered Species Act protects species that are at risk and their habitats. The Safe Drinking Water Act governs the quality of drinking water. None of these establish a nationwide framework for regulating air quality like the Clean Air Act does.