D) Increase in temperature.
When we are too hot, blood vessels supplying blood to the skin can swell or dilate (vasodilation). This allows more warm blood to flow near the surface of the skin, where the heat can be lost to the air.
Sweating and vasodilation would be signaled to cause a decrease in temperature. The correct option is C.
Vasodilation is the broadening of blood vessels caused by the deep relaxation of the muscular walls of the blood vessels.
It is a physiological process that increases blood flow to areas of the body that are deficient in oxygen and/or nutrients.
Vasodilation happens naturally in your body in response to triggers like low oxygen levels, a decrease in available nutrients, and temperature increases.
Vasodilation and sweating occurs when the body temperature rises and tends to lower down the temperature.
Thus, the correct option is B.
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