PLZ HURRY I'M TIMED

Why was it important to establish the Clean Air Act? SELECT THREE OPTIONS.

A. emphasize cost-effective methods to protect the air

B. encourage people to study the effects of dirty air on human health

C. determine ways to reduce the number of premature deaths per year

D. create a regulation that makes any activities that pollute the air illegal

E. make sure that no government activities polluted the local atmosphere