A vascular surgeon is a doctor that operates on veins & arteries. (vascular system)
The answer is A. Size of the muscle cells, ability to store fuel, and blood supply to the muscle
Muscle endurance : The ability of your muscle to do continuous work over a long period of time
Size of muscle Cells : Affect muscle strength
Ability to store fuel : Affects energy storage to do work
Blood Supply to the muscles : Affect muscle durability ( prevent injury)
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