"Terribilita" refers to.
a.) the plague in Florence that prevented the completion of the David.
b.) the villa Michelangelo shared with Raphael
c.) a typical reaction of the Florentine critics to Michelangelo's work.
d.) the flawed marble that poverty forced Michelangelo to use.
e.) the dynamic energy Michelangelo was able to implant in his statues.