You would expect to find valves

a. in the aortic trunk to direct blood flow

b. in the capillary beds in the skin to regulate blood volume

c. in the carotid artery so blood flow overcome gravity

d. in the great saphenous vein in the leg to prevent backflow

The answer is D.  in the great saphenous vein in the leg to prevent backflow

Explanation:

I took the test.

explanation:

daily refers to frequency, like weekly or monthly. take this medicine twice daily, once in the morning and again at bedtime. on a daily basis there refers to everyday life, to one's normal or usual behavior, activity, routine, or schedule, to the quotidien.

the answer should be c