The correct answer is B) he failed to respond to the needs of the people.
The other options of the question were A) he decreased the taxes in the aristocracy. C) he enjoyed spending money lavishly. D) he was advised only by the clergy.
Louis XVI was considered ineffective because he failed to respond to the needs of the people.
People in France considered Louis XVI a weak king that really never supported its people and resolve the many needs they had. His intentions were good but their actions were not. Indeed, the lack of actions is what French people resented during hos monarchy.