Answer: A.) must not be a member of Congress or any other elected office.
Step-by-step explanation:
The U.S cabinet refers to the body that comprises of the President, Vice President and the heads of the various Departments under the President that work to enact Executive policy.
By the Constitution, specifically in Article I Section 6, people who have an elected office under the United States including members of Congress and Governors cannot serve in the President's cabinet.