C is not the right answer as it does not even include name of the artist, Di Vinci. The correct answer is A. Leonardo Di Vinci is best known for his fantastic paintings and sculptures but he was also an inventor and invented the ariel screw, the parachute, and several war machines.
I think the answer is false. I hope this helps.
Answer: D
Explanation: "less" almost always qualifies as an adjective, because it's describing a noun, that being support, which is a thing/idea.
You would use it as an adverb if you were using it to describe or add more information to a verb. Ex. "I've been trying to work <em>less</em> on the weekends." Work is a verb, so less would qualify as an adverb here.