Final answer:
A hair follicle is a tube-like structure in the dermis of the skin made of epithelial tissue. The follicle surrounds the hair root and contains the cells responsible for producing and nourishing the hair shaft.
Step-by-step explanation:
The correct option is c) Follicle. A hair follicle is a tube-like structure in the dermis of the skin that is made of epithelial tissue. The follicle is the structure that surrounds the hair root and contains the cells responsible for producing and nourishing the hair shaft. The hair shaft, on the other hand, is the part of the hair that is visible above the skin's surface. It is primarily composed of dead, keratinized cells.