Question

the portion of a hair that protrudes above the surface of the skin is the:
a hair root
b hair bulb
c hair shaft
d dermal papilla
e hair follicle

Explanation:

A hair has two main parts. The hair root is inside the skin, attached to the hair follicle. The hair bulb is at the base of the hair root. The dermal papilla is a structure within the hair bulb that provides nutrients. The hair follicle is the tube - like structure in the skin that houses the hair root. The hair shaft is the visible part of the hair that extends above the skin surface.

Answer:

C. hair shaft