The skin is composed of three layers: epidermis, dermis, and hypodermis. how do the layers of the skin protect the body from bacterial infections?

a. the dermis acts as a tough physical barrier, and the hypodermis produces solutions that make the skin slightly basic.

b. the dermis absorbs microparticles from the skin, and the hypodermis contracts during cold environmental temperatures.

c. the dermis stores energy as fat for future consumption, and the hypodermis produces external bumps on the skin.

d. the dermis releases oils that cover the skin, and the hypodermis releases heat from capillaries that expand when warm.