Answer:
The correct answer will be option C - increases.
Step-by-step explanation:
The dilation or vaso-dilation is the widening or increase in the diameter of the blood vessels- arteries, arteriole and veins.
The vasodilation is caused by the relaxation of the smooth muscle which results in the increased flow of the blood through these vessels due to a decrease in the vascular resistance.
Thus, option C - increases are the correct answer.