when congress adjourns, it

a. ends a session
b. decides whether to consider a bill
c. breaks into committees
d. discusses an emergency situation

a.

Correct!

When Congress adjourns, it means that it ends a session.

To find the answer to this question, one can refer to the rules and procedures governing the U.S. Congress. The U.S. Congress is bicameral, consisting of two chambers: the House of Representatives and the Senate. Each chamber operates on a legislative calendar, which schedules meetings and sessions.

Congress adjourns when it formally ends a session, usually after completing the legislative agenda or reaching a predetermined date. This adjournment marks the conclusion of the session, and until the next session begins, all legislative activities, including voting, committee hearings, and debates, cease.

Therefore, the correct answer is option a. ends a session.