Select the correct answer. What is cardiorespiratory endurance?
A.
the ability of your heart and lungs to work during prolonged exercise
B.
the ability of your heart to pump blood to your cells
C.
the ability of your heart and lungs to fend off asthma
D.
the ability of your heart to send de oxygenated blood to the lungs
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The official definition for cardiorespiratory endurance is "Cardiorespiratory fitness refers to the ability of the circulatory and respiratory systems to supply oxygen to skeletal muscles during sustained physical activity."

Based on that, the answer is A.

*Just for citation purposes, the definition is from Wikipedia.

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answer; i believe the answer is moderate level;