Which Latin American artist or writer believed all art should be public?

A. Diego Rivera

B. David Alfaro Siqueiros

C. Frida Kahlo

D. Gabriela Mistral

Answer

David Alfaro Siqueiros was Latin American artist or writer who believed all art should be public

Explanation

David Alfaro Siqueiros was a Latin american writer who was one of the founders of the modern school of Mexican painting. His was one of the most innovative writers in those time because his style of art was of traditional Mexican art and modern art was unique. His revolutionary artwork brought changes in mexico at that time. He also was not afraid to bring art work in political work and he believed that all art work should be public.

I am not sure what the others thought about it (for example Kahlo and Rivera were communists, so they likely believed it too!)

but a very good answer is B. David Alfaro Siqueiros, since he was very opened about this view, stating it many times.