Avant-garde artists often created modern art
a. to shock the viewer
b. to create a bold statement against a belief
c. rooted in their countries cultures and histories

b)  To create a bold statement against a belief

Being avant- grade implies being before others with regards to social and social understandings and convictions. This does not really need to stun, but rather at times it is. avant grade specialists dependably need to demonstrate that the present convictions have a place with the old occasions and need to change the world.

the answer is d . a measurement   how can artists measure the width of the human face to use drawing for correct proportions

your answer would be d.)