Question

Baroque art emerged in the late sixteenth century as part of the Counter-Reformation. Which artist's work marked the beginnings of Baroque art?

Answer 1

Well, it depends on where you look for information.
Michelangelo created some works which are considered to be the beginnings of Baroque, although he was a Renaissance artist.
On the other hand, Gian Lorenzo Bernini is credited with creating the Baroque style of sculpture, so the answer is one of these two artists. 

Answer 2

Answer: For Plato users it's  

B.  Michelangelo Buonarroti

Explanation:

I did it on plato.