If cindy wanted to increase her endurance by taking supplements or drugs, she would be attempting to increase the
a. uptake of oxygen by red blood cells
b. release of sugars in the blood stream
c. uptake of carbohydrates by the body
d. release of insulin in the body select the best answer from the choices provided.

A. uptake of oxygen by red blood cells

Explanation:

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true

explanation:

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answer; 4% i believe this is correct;