The arrangement of plot events in a tragedy reveals
the desires of the audience
the triumph of the tragic hero
the humor of the playwright
the downfall of the protagonist

The arrangement of plot events in a tragedy reveals "the desires of the audience and  the triumph of the tragic hero." The arrangement of plot events is very important because the whole story revolves around it. It also has the big chunk of the meat of the story.

Ithink that the answer is c

The artist is fra angelico