what important new idea did the abstract expressionist movement pose that had a major and lasting effect on art?

The answer is a : varying the size of objects or subjects, so that some are smaller than others and the illusion of depth is created.hope this : )

Did you ever find the answers?  

Bthe vegetative arrangements group same-season flowers together

B) giotto's experience with living through the black death.you didn't show the painting, but i have the class here : )