How did social instability during the early 20th century contribute to the
development of Cubism?

A. It helped Cubists recognize that art could be used to demand
social and political change.

B. It inspired Cubists to focus on creating works that promoted
social tranquility.

C. It convinced Cubists that new art styles were needed to depict the
modern world

D. It led Cubists to stop depicting the material world and focus
entirely on human emotions.