Final answer:
The primary function of sensible perspiration is to cool the body through the process of evaporation. Sweat glands in the skin continuously monitor body temperature and produce sweat to regulate body temperature. Besides cooling the body, sweat also helps excrete waste products. The correct option is D.
Step-by-step explanation:
The primary function of sensible perspiration is to cool the body when sweat evaporates from the skin's surface. This is achieved by removing thermal energy from the body through the process of evaporation.
Adequate fluid intake is important to produce sweat and maintain balance during the sweat response. Besides cooling the body, sweat also helps excrete waste products such as water, salts, sugars, and ammonia.
Furthermore, sweat glands in the skin are continuously monitoring body temperature and producing sweat to cool the body when needed.
The sympathetic nervous system stimulates sweat glands to secrete large amounts of sweat, especially during high temperatures or vigorous activity. Regulating body temperature is an important function of the integumentary system, which includes the skin and sweat glands. Option D. is the correct one.