Cardiorespiratory fitness is defined as the:

A. the ability of the cardiovascular and respiratory systems to supply oxygen to muscles.

B. the maximal amount of blood expelled per beat.

C. the maximum amount of weight that can be lifted one time.

D. the ability of the muscular system to generate power during interval training.

A) Cardio respiratory fitness is the ability of the cardiovascular and respiratory systems to supply oxygen to muscles.

Explanation:

Cardio respiratory fitness is referred to as the ability of the cardiovascular and respiratory systems to supply oxygen to muscles. Constant exercise enables the circulatory and respiratory systems to be more efficient and effective by making the muscle of the heart large enough to allow more blood to be pumped with each beat and an expectant increase in the number of arteries in the skeletal muscles which supply blood to the active muscles. Exercise enhances the respiratory system as well as the heart when it increases the amount of oxygen that the body inhales and shared to the body tissues.

Answer: Option A.

Ability of the cardiovascular and respiratory systems to supply oxygen to muscles.

Explanation:Cardio

Cardiorespiratory fitness is the ability of the cardiovascular and respiratory systems to supply oxygen to the muscles during exercises or physical activities.

It is very important because it bring about wellness to the body.

It reduce the risk of heart diseases, diabetes, strokes and cancer. It also improve lung and heart condition.

Examples of cardiorespiratory fitness are running, jogging, swimming, biking, dancing e. t. c