Question

what happened after the committee of public safety began to fall apart?
in order to unite, a new leader took charge
liberals regained power and pushed out radicals.
the monarchy moved in to resume power.
power shifted back to the national convention.

Explanation:

During the French Revolution, after the Committee of Public Safety (the radical revolutionary body) collapsed, moderates (liberals) reasserted control, removed radical leaders, and ended the Reign of Terror. The monarchy was not restored at this point, power did not return to the National Convention in this context, and a unifying new leader did not take charge immediately after its collapse.

Answer:

Liberals regained power and pushed out radicals.