Question

who has the power to appoint a body capable of invoking the 25th amendment? the supreme court the secretary of state congress

Explanation:

The 25th Amendment to the U.S. Constitution addresses presidential succession and disability. There is no body "appointed" to invoke it—instead, its provisions are triggered by the President, Vice President, and/or Cabinet (with congressional involvement for certain steps). However, among the given options, Congress is the only entity with constitutional authority related to the amendment’s processes (e.g., confirming a Vice Presidential nominee under Section 2 or resolving disputes over presidential capacity under Section 4). The Supreme Court and Secretary of State have no role in appointing a body for this purpose.

Answer:

Congress