Which aspect of voltaire's writing makes him part of the enlightenment? a: his writings in defense of enlightened monarchs. b: his questioning of political, religious, and scientific authority. c: his devout theological works in defense of the pope. d: his humorous plays and operas.

His intelligence, wit, and style made him one of France's greatest writers and philosophers, despite the controversy he attracted. he was an outspoken supporter of social reform. (including defense of civil liberties, freedom of religion, and free trade).He was a prolific writer and produced works in almost every literary form (plays, poetry, novels, essays, historical and scientific works)

I believe the answer is B.