I think the closest answer to being correct is d, that seems the most accurate
Answer:
His fundamental ideas concern drawing contours, structuring a composition, and using colour.
Explanation:
Relief is a sculptural technique where the sculpted elements remain attached to a solid background of the same material. The term relief is from the Latin verb relevo, to raise. To create a sculpture in relief is to give the impression that the sculpted material has been raised above the background plane.
It was very different type of art for the time that is why and it was very sad type of art it mean sad things