Hello!!
I had this exact question on a test at my school so I know that having to remember what everything is called is difficult sometimes.
Your answer would be Retrograde.
I hope that this helps!!
Answer:
abstract art, also called nonobjective art or nonrepresentational art, painting, sculpture, or graphic art in which the portrayal of things from the visible world plays little or no part. All art consists largely of elements that can be called abstract elements of form, colour, line, tone, and texture. Prior to the 20th century these abstract elements were employed by artists to describe, illustrate, or reproduce the world of nature and of human civilization and exposition dominated over expressive function.