11.
Mark just started an exercise program. To which part of the target heart rate range should he aim to exercise at?
A.
77%
B.
75%
C.
60%
D.
80%
It depends on Mark's fitness goals and his current level of fitness. However, commonly recommended target heart rate ranges for moderate-intensity exercise are typically 50-70% of maximum heart rate, while target heart rate ranges for vigorous-intensity exercise are typically 70-85% of maximum heart rate.
Since none of the given options specify Mark's fitness goals or his maximum heart rate, it is not possible to determine the exact target heart rate range for him. However, of the options given, the closest to the recommended range for moderate-intensity exercise is option C. 60%.