A. The answer should be A
The interstate commerce act (1887) and the sherman antitrust act (1890) were efforts by the federal government to end the formation of monopolies and to increase healthy competition between businesses.
ANSWER: The resulting Clean Air Act of 1970 made EPA directly responsible for establishing limits on air pollutants and enforcing them. ... The agency eased into clean air issues slowly in order to give researchers time to do their work before legislative deadlines forced Ruckelshaus to promulgate air quality standards.
A I think I tried but hope this helps
He ruled for 50 years. He died however about a year ago after a heart attack at the age of 90.