Which of the following is a major cause of high levels of air pollution in India's largest cities? A.
low emission standards for power plants

B.
low standards on industrial waste disposal

C.
low standards for vehicle emissions and fuel

D.
Private business not following government regulations

low standards on industrial waste disposal

the answer is d. tariffs were raised by america's trading partners after the smoot-hawley tariff act, decreasing exports, and declining job rates.

the answer is c     : )

explanation:

i don't have an explanation because i don't know, but i think the answer is c because i googled it and google is right : ) just kidding google isn't allways right but the answer is still c. i hope this !