Answer:
C. release energy
Explanation:
Cardiovascular fitness refers to the ability of the heart and lungs to supply oxygen-rich blood to the working muscle tissues also the ability of the muscles to use oxygen to produce energy for movement.
Aerobic excercises lead to the breakdown of glycogen to glucose.
Oxygen is used to burn fats and glucose will be used to produce ATP (Adenosinetriphosphate) the basic carrier of energy
Cardiovascular exercises include walking, jogging, running among others.
