After which event were the king and his family imprisoned?

Correct answer: Attack on Tuileries Palace

The king and his family were imprisoned after the attack on the Tuileries Palace, so the correct choice is A. On 10 August 1792, armed revolutionaries and National Guards attacked the palace because many people believed that the king was opposing the Revolution and helping its enemies. The royal family was removed from the palace and placed under guard. This event ended the monarchy’s effective authority and soon prepared the way for the declaration of the French Republic. It is different from the earlier storming of the Bastille in 1789.

The Tuileries attack occurred during a much more radical stage of the Revolution. Suspicion of the king had increased after the flight to Varennes and the threat of foreign invasion. After the palace was captured, the Legislative Assembly suspended the king and ordered elections for a National Convention. The Convention later abolished the monarchy. Thus, the event named in option A directly explains why the king and his family became prisoners. The construction of the Bastille, an old estate meeting, or the writing of a song did not produce this result.