Final answer:
The dermis is the skin layer housing sweat glands, sebaceous glands, hair follicles, and nail roots. option d.
Step-by-step explanation:
The layer of the skin that contains the sweat glands, sebaceous glands, hair follicles, and nail roots is called the dermis. The dermis is the inner layer of skin situated beneath the epidermis and is responsible for a variety of functions critical to the skin's role as a protective barrier and sensory interface. It is made up of tough connective tissue and includes other important skin components such as blood vessels, nerve endings, and the associated structures of hair and nails. The dermis is the thicker layer of skin beneath the epidermis and is made up of connective tissue. It also contains structures such as blood vessels, nerves, and muscles.