Question

8 the \tanning\ effect (darkening of the skin) that occurs when a person is exposed to the sun is somewhat protective due to: a added layers of epidermis that thicken the skin b an increased blood supply that carries the heat of the sun away c increased production of melanin that helps to block ultraviolet light d an increased concentration of keratin that \toughens\ the skin

Explanation:

When exposed to the sun, skin cells produce more melanin. Melanin absorbs ultraviolet (UV) radiation, reducing the amount of UV - light that can damage skin cells and cause harm like DNA damage. It is the main protective mechanism related to tanning. Options A, B, and D are not the main reasons for the protective effect of tanning.

Answer:

C. increased production of melanin that helps to block ultraviolet light