how does the majority party in the house of representatives exercise power over a committee?\nby preventing…

Brief Explanations:

In the U.S. House of Representatives, the majority party has significant control over committees. They appoint the chair and a majority of the members, which gives them power to set the committee's agenda, direct investigations, and influence the outcome of committee - work. Preventing a committee from meeting is not a common or formal way of exercising power. Rejecting findings is a later stage action and not the main way to exercise power over a committee. The whip's role is different from being a voting member of a committee for the purpose of controlling the committee.

Answer:

by appointing the chair and a majority of the members