Final answer:
The structure in the scalp or skin that contains the hair root is the hair follicle. Hair follicles allow for hair growth and are associated with sebaceous glands that produce sebum, which conditions the hair.
Step-by-step explanation:
The pocket or tube-like depression in the scalp or skin that contains the hair root is known as a hair follicle. Hair follicles are the structures from which hairs originate. These follicles allow for the growth of hair by harboring stem cells that divide, leading to the growth of the hair shaft out through the epidermis and exiting at the skin's surface. The hair root is the portion of the hair inside the follicle, located beneath the skin.
Each follicle is closely associated with a sebaceous gland, which secretes sebum, an oily substance that lubricates and helps to waterproof the hair. Additionally, the hair follicle has a bed of capillaries and a nerve ending, as well as a tiny muscle called the arrector pili. With all these components, the correct answer is option 1) Follicle.
\