Although the national assembly was made up of the third estate

Correct answer (from choices shown in comment):  C: Many members still wanted to keep the king involved in government.

Context/detail:

The 3rd Estate represented the "ordinary" or "common" citizens of France, as opposed to clergy (1st Estate) and nobility (2nd Estate).  The 3rd Estate was the bulk of the people (98% of the population) of France, all considered "commoners."  (The clergy and nobility were the 1st and 2nd Estates.)   So, the 3rd Estate included wealthy, bourgeois wine merchants and lawyers and professionals, as well as day laborers in the city and  peasant farmers in the country.

The beginning phase of the French Revolution was led by the bourgoisie -- the wealthier, business class within the 3rd Estate.  They were not seeking a complete upheaval of the government, but a situation that would give them greater political rights and a government that would be advantageous for their pursuit of business profits.  So the first phase of the Revolution was moderate in its goals, wanting the king to remain but be a constitutional monarch.  It was later that the Revolution turned radical and began to move against the king and his family, eventually executing both the king and the queen.

C many members still wanted to keep the king involved in government

a. competition between france and england for land and power