The artist who painted this piece of modern art focused mainly on and
a. balance; design
c. symbolism; design
b. balance; proportion
d. imagery; arrangement

The artist who painted this piece of modern art focused mainly on balance and design.

Explanation:

In the modern era most of the artists and moreover painters focused on creating more balance and well designed artistic work, as they had the idea along with all the components well composed by them to represent various events more clearly. As they wanted people to know and understanding there work more easily and frequently.

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