Question

economic crisis
why did the members of the third estate create an independent assembly?
they wanted to show their support of the king and the estates-general.
they knew that the other two estates would block reforms that would benefit ordinary people.
they believed that the king would lower grain prices, which would hurt the peasantry.
they wanted to reject the principles of the enlightenment

Explanation:

The Third Estate represented the vast majority of ordinary French people (peasants, urban workers, bourgeoisie) before the French Revolution. The First (clergy) and Second (nobility) Estates held disproportionate power, including the ability to block reforms that would address the unfair tax burden and economic hardships faced by the Third Estate. The Third Estate formed the National Assembly (their independent assembly) because they knew the other two estates would block reforms beneficial to ordinary people. The other options are incorrect: they opposed the unfair Estates-General structure, did not fear lower grain prices (they suffered from high prices), and many embraced Enlightenment ideas.

Answer:

They knew that the other two estates would block reforms that would benefit ordinary people.