Why was leonardo da vinci considered a true “renaissance man”?
a.
he devised new ways of recording information that could be shared with ordinary people.
b.
he was a brilliant author and poet whose literary works made people think about art and science.
c.
his paintings set new standards in art, and they were painted during the renaissance.
d.
he was a renowned artist, clever inventor, and brilliant scientist whose accomplishments spanned many fields of interest.

The answer is: 
D. He was a renowned artist, clever inventor, and brilliant scientist whose accomplishments spanned many fields of interest.
Reasoning: When using the term Renesance, it mainly refers to the definition: a person who's capable of excelling at a very wide variety of activities... Therefore, when deciding the answer to this, the only answer that corisponds to, "One who is capable of excelling at a wide variety of activities", would be D.

~Hope this helped! :)