Question

what is the subject matter of this piece of art?
a. the theater
c. the dancers traditional costumes
b. the emotion created by the colors
d. ballerinas rehearsing

Explanation:

The image shows ballerinas in practice - like poses. The subject matter is what the art piece is about. Here, it's clearly ballerinas rehearsing. The theater is just the setting, the emotion from colors is an aspect of the art's effect, and the costumes are part of the ballerinas' appearance but not the main subject.

Answer:

d. ballerinas rehearsing