Answer:
It's basically something that helps hold up a structure.
Explanation:
In architecture, a corbel is a structural piece of stone, wood or metal jutting from a wall to carry a superincumbent weight, a type of bracket. A corbel is a solid piece of material in the wall, whereas a console is a piece applied to the structure. -Wikipedia
I am thinking the answer is D but I learn this about 30 weeks ago and I am thinking about a book my teacher made us read for that class (World Geography). But I believe it is C
I can't answer your question until you give me the answer choices.