Answer:
Option D.
Step-by-step explanation:
To discuss France's tax system, is the right answer.
In 1789, Louis XVI the emperor of France convened a conference of the Estates-General. The main reason for calling a meeting was that the state was facing financial problems.
The Estates-General was the parliamentary organisation of France until the break out of the French Revolution. It was called by the king to discuss some significant matters such as revenue system etc.