Why are committees sometimes called “little legislatures”?

Explanation:

Committees are sometimes called little legislatures because of the influence they wield. These committees do most of the legislative work in Congress and therefore have great power in determining which bills get reviewed and in shaping the laws that are passed.

the answer might be either a or c. can't be too sure , because i searched the web, but no valid answers came through.

answer; i believe the correct answer is (117);