When a person does strenuous exercise small blood vessels near the surface of skin increase in diameter this change allows body to be cooled these statements best illustrate?

The statements best illustrate vasodilation.

Vasodilation is the widening of blood vessels, which allows more blood to flow through them. When a person does strenuous exercise, the body needs to cool down. The small blood vessels near the surface of the skin increase in diameter, which allows more blood to flow to the skin's surface. This helps to dissipate heat and cool the body down.