Pollution Damages the Environment We Live In

Multiple Choice

Pollution damages the environment we live in. When would an economist advise that we reduce air pollution?

A) when air pollution is in excess of the levels experienced in the 1950s, when air was much cleaner near big cities
B) when the total benefit from air pollution reduction just equals the total cost of pollution reduction
C) when air pollution levels are above near-zero levels
D) when the marginal benefit from air pollution reduction outweighs the marginal cost of achieving the reduction