Cardiovascular exercise involves

Aerobic exercise involves the continuous and rhythmic use of large muscle groups,4 such as walking, jogging, cycling, and swimming. In practical terms, this means sustaining a self-perceived moderate-to-vigorous exercise intensity for a prolonged period.

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Cardiovascular exercise is any vigorous activity that increases heart rate and respiration and raises oxygen and blood flow throughout the body while using large muscle groups of the body repetitively and rhythmically

Explanation:

answer; all of the above;

hmmm

true, i think.

i checked and it seems the answer is, true.