The pair of sentences that completes the diagram relating to the French Revolution are Firstly, the National constituent assembly proposes a new constitution in France and Secondly, the end of Reign of terror by the French leaders.
Option A is correct.
What was French revolution?
French revolution was marked the transformation of France that began from the year 1789 through Estates General system till its end in the year 1799 with the creation of French consulate.
During the French revolution, firstly, the proposal of new constitution of France by the National constituent assembly, then the Louis XVI and other monarchy leaders were prosecuted due to practicing of absolute monarchy in France, then the reign of terror being ended by the leaders in France and lastly, the Napoleon declared as a king of France. In this, way whole diagram is completed.
Therefore, the explanation provided in option A is correct.
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