Which one of the following artists influenced raphael's school of athens?
a. el greco
b. michelangelo
c. parmigianino
d. caravaggio

B. Michelangelo 
 Michelangelo, him and Raphael were known to have a heated rivalry as they worked in the Vatican as painters at the same time. It is obviously not El Greco or Caravaggio as the piece was painted before their births and Parmigiano would have only been six at the time of its completion.

Answernon-religious themes became more popular, and people also wanted to show off their wealth because painting was a sign of this at the time;