The exercise session should be vigorous enough to increase the heart rate to the target zone and maintain it for
a.) 5 minutes
b.) 5-10 minutes
c.) 10-15 minutes
d.) 60 minutes

A 5 minutes the exercise session should be vigorous enough to increase the hears rate

5 min or in other words I agree with the top guy because he answers first

c.a.

explanation:

birth control pills, the birth control patch, and the vaginal birth control ring are these hormones prevent pregnancy mainly by stopping ovulation