Question

If Cindy wanted to increase her endurance by taking supplements or drugs, she would be attempting to increase the __________.

Answer 1

Answer:

A.  The endurance of an athlete is dependent on his or her body's ability to uptake oxygen efficiently, a task carried out by the red blood cells.

Explanation:

got it right on the quiz

Answer 2

A.
The endurance of an athlete is dependent on his or her body's ability to uptake oxygen efficiently, a task carried out by the red blood cells.