Legislates and enforces regulations that

To reduce pollution, the

protect the air, water, and land

Environmental Protection Agency

Explanation:

Out of all of the choices, the Environmental Protection Agency is the only administration that focuses on the protection of the environment, which would include the reduction of pollution, through protecting the air, water, and land.

OSHA and the FDA work to protect consumers and people in the workforce.

The SEC works with small businesses and investors.