Who can propose a constitutional amendment?

The correct response highlights that the process for proposing a constitutional amendment involves either Congress or a constitutional convention. Under Article V of the U.S. Constitution, there are two methods for proposing amendments:

1. Congress can propose an amendment by a two-thirds vote in both the House of Representatives and the Senate.

2. Alternatively, an amendment can be proposed through a constitutional convention called for by two-thirds of the state legislatures.

This dual mechanism ensures that both the federal legislative body and the states have a role in the constitutional amendment process, reflecting the federal nature of the U.S. government. It doesn't limit the process to a single entity like the President or the Supreme Court, which plays no role in the amending process. Therefore, the selection accurately encapsulates the provisions outlined in the Constitution regarding who has the authority to initiate amendments.