the ability of the heart, lungs, and blood vessels to supply oxygen to skeletal muscles during sustained physical activity is:

Cardiovascular Endurance

Explanation:

Cardiovascular endurance is the ability of the heart, lungs, and blood vessels to deliver oxygen to working muscles and tissues, as well as the ability of those muscles and tissues to utilize that oxygen over an extended period of time with moderate intensity.

the suction machine and tubing is the equipment that should be left behind and should be most easily accessible.

the answer the third choice the letter c