High-relief sculpture is different from low-relief sculpture in that: a) high-relief projects only slightly from the background. b) All these answers are correct. c) high-relief is installed high upon the wall of a building. d) high-relief is a freestanding work that can be viewed from any angle. e) elements of high-relief may be in the round, unattached to the background.

elements of high-relief may be in the round, unattached to the background.

Explanation:

High-relief sculpture is different from low-relief sculpture in that: high-relief projects boldly from the background, and elements of high-relief may be in the round, unattached to the background. ... The additive process of sculpture includes: both assembling and modeling.

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