What happens after a supreme court justice is appointed? the justice must be approved by popular vote. the justice must be approved by the house. the justice must be approved by the senate. the justice must be approved by a political party.

The correct response is "The justice must be approved by the Senate."

Explanation:

The President of the United States is who first nominates candidates to the Supreme Court. Then it is customary for a new candidate to be subjected to a set of hearings where the appointed person answers questions and witnesses can make statements either on behalf or against the nomination before the Senate Judiciary Committee. The Senate Judiciary Committee can then decide to send the nomination to a vote in the full Senate.