Identify the changes that art underwent in the late 20th century

merging of self-expression with cultural commentary.

incorporation of concepts such as feminism and racism in art.

Explanation:

all of them except "c"

i think cheerleading is definitely a form of art. or at least it should be! not everyone has what is takes/and or the determination to become a cheerleader. it takes practice and hard work, along with being able to master a move correctly, like dancing. dancing is a form of art, and i think cheerleading is too. not everyone can dance, just like not everyone can be a cheerleader.