Answer:
D
Explanation:
A.
If we increased the use of fossil fuels, that would actually increase air pollution, so this is not correct.
B.
Even if we switch to wood, that would still create pollution, and it wouldn't be a lasting and efficient solution. This is not the correct option.
C.
If the Environmental Protection Agency's role is decreased, there will be no regulations for car emissions, and air pollution would increase. This choice is not correct.
D.
If we decrease our dependency on burning fossil fuels and create better regulations for car emissions, that would decrease air pollution. Therefore, D is the right choice.
