Question

after world war ii, the number of cars and trucks in the united states increased dramatically. the increase in motor vehicles created more air pollution, especially in cities. higher levels of air pollution began to have a significant negative impact on public health and the environment. in order to address the growing health and environmental issues, the u.s. congress passed the clean air act. this legislation gave the environmental protection agency (epa) the authority to limit pollution from vehicles.

which type of solution did congress employ?

Explanation:

The problem is about the U.S. Congress passing the Clean Air Act to address air pollution issues from motor vehicles. This involves legislation and policy - making, which falls under the subfield of Politics (within Social Science) as Congress is a political body creating laws to solve a public issue.

Answer:

Congress employed a legislative (or policy - based) solution by passing the Clean Air Act, which gave the EPA the authority to limit vehicle - related pollution.