Question

participating in cardiovascular exercise in the target heart rate zone will result in
a higher maximum heart rate
a lower resting heart rate

Explanation:

Cardiovascular exercise in the target heart rate zone improves cardiovascular fitness. A lower resting heart rate is a sign of improved fitness as the heart becomes more efficient, needing fewer beats at rest. Maximum heart rate is largely age - related and not increased by exercise. So the correct option is "a lower resting heart rate".

Answer:

a lower resting heart rate