Another name for the hole in which the eye sits in the skull is
a. sclera.
c. orbit
b. pupil.
d. mandible

First, look at your choices and eliminate the ones that obviously don't fit.
So a mandible (jaw) and a pupil (one the eye) don't work
Out of the two left..
A sclera won't work since it of apart of the eye.
So you only have orbit left.
By definition, orbit is the answer you are looking for.

Hope this helped! :)

C. Orbit, or eye socket. This is the bony structure that surrounds the soft tissue around the eye to form a kind of protection