Answer:
C. It gave regulatory power to the federal government.
Explanation:
"The Air Pollution Control Act of 1995 was the first federal legislation involving air pollution. This Act provided funds for federal research in air pollution. The Clean Air Act of 1963 was the first federal legislation regarding air pollution control. It established a federal program within the U.S. Public Health Service and authorized research into techniques for monitoring and controlling air pollution" - EPA government.
