Answer:
In addition to protection (physical and chemical barrier), the skin serves other functions which is It converts modified epidermal cholesterol to a vitamin D precursor important to calcium metabolism.
Therefore, the correct answer to the question is option C
Step-by-step explanation:
Skin is the outer covering of the body. The main function of the skin is protection of internal parts of the body. Rather than this it is the site of absorbing the sunlight for the vitamin D. It is also helpful in the metabolism activities.
Skin also helps in the cooling of the body as it helps in the evaporation of sweat which result in instant cooling of the body in heated up surroundings.