Why do the french celebrate bastille day? bastille day marks the beginning of the period of great fear. bastille day marks the beginning of the french revolution. bastille day marks the beginning of the reign of terror. bastille day marks the beginning of the national convention.

The correct answer is B. Bastille Day marks the beginning of the French Revolution.

Explanation:

The Bastille Day is a national day in France on July 14, that is mainly celebrated to commemorate the Storming of the Bastille that was incident that took place on July 14 of 1789 as the Bastille fortress was attacked as this was a symbol of the monarchy that the population of France aimed at defeating which led to the beginning of the French Revolution. This means the Bastille Day reminds people of France of the beginning of the French Revolution and the way people joined to defeat the monarchy and establish the democratic system that still prevails in the country and therefore, the reason the French celebrate Bastilla Day is that this day marks the beginning of the French Revolution.

ok sorry the answer is a. by their religion