Final answer:
Option (B), The Third Estate retreated to the Jeu de Paume where they took the Tennis Court Oath, signifying a key moment in the French Revolution.
Step-by-step explanation:
When the Third Estate was locked out of Versailles, they went to the Jeu de Paume, an indoor tennis court, where they took the famous Tennis Court Oath on June 20, 1789. This event is especially significant as the National Assembly vowed not to disband until France had a written constitution, marking a pivotal moment of solidarity and determination in confronting the absolute authority of the king.
The actions of the Third Estate were a major event in the French Revolution, setting the stage for the dramatic restructuring of the French socio-political landscape.