Individuals should participate in activities to improve cardiovascular fitness.
a.
twice a day
b.
three to five days a week
c.
two to three days a week
d.
seven days a week

B.three to five days a week

Explanation:

The average amount of fitness activities tha individuals should be involved in in orderd to improve cardiovascular fitness, this consideraing a healthy diet and regular sleeping hours, for adults is around three to five days a week in order to improve cardiovascular fitness, it could be several different activities, like walking or running, or even swimming, there are several different options adecuate for all people to be able to live a healthier life.

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