Why did the third estate form the National Assembly?

Answer:
Option: They wanted to find a way to benefit ordinary citizens.
Explanation:
The National Assembly of France formed with the common people (the third Estate) who demanded the king to make reform in the country for the betterment of all people. The national assembly agreed to introduce economic reforms for the benefits of people. The National Assembly abolished the old estate system, which divided poor from the aristocrats in society.