There are stretch receptors in the aorta and carotid arteries, and they are stimulated when blood pressure falls. If blood pressure falls, then the body would take measures to ________________________.

I. make certain that the kidneys conserve water.

II. produce urine that is clear and diluted.

III. increase the water in blood plasma.

IV. decrease blood plasma volume.

A) I only
B) I and II only
C) I and III only
D) II and IV only