Question

when the body is warm, blood vessels do what? vasoconstrict dilate coagulate constrict

Explanation:

When the body is warm, it needs to dissipate heat. Blood vessels near the skin surface dilate to increase blood - flow to the skin, allowing more heat to be released. Vasoconstriction occurs when the body is cold to conserve heat. Coagulation is related to blood clotting and not to temperature - related blood vessel response. Constriction is a general term similar to vasoconstriction.

Answer:

B. Dilate