Which of the following statements regarding exercise is true?
A) For an activity such as jogging or long- distance running,the primary source of energy is stored ATP and PCr.
B) If the demand for ATP outstrips oxygen supply,muscles switch to aerobic fermentation.
C) The main source of energy during aerobic exercise is ATP from aerobic respiration.
D) During a short burst of activity such as a sprint,the main source of energy is aerobic respiration.
Correct Answer:
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