Question

a ____ is a rounded opening through a bone.
a foramen
b fossa
c trochanter
d condyle

Explanation:

A foramen is defined as a rounded opening through a bone, often allowing nerves and blood - vessels to pass through. A fossa is a depression or hollow on a bone surface. A trochanter is a large, prominent process on a bone, mainly found in the femur. A condyle is a rounded knob at the end of a bone, usually forming a joint with another bone.

Answer:

A. foramen