A physician may refer to a scar left after the healing of a wound as a:

A) cicatrix.
B) comedo.
C) corn.
D) cyst.

Cicatrix

The medical term for a scar that is left on the skin after a wound has healed.

Comedo

A clogged hair follicle in the skin, often seen in conditions like acne; can be open (blackhead) or closed (whitehead).