The letter b will be your answer
<span>Since I do not know your maximum heartrate ill give you the standard. For vigorous-intensity physical activity, a person's target heart rate should be 70 to 85% of his or her maximum heart rate.</span>
Running. D, I was going to put down, A, but D is most logical as well.
Being physically active can increase ur chances of living longer and it reduces ur health risk. For the mental thing more focus and motivation. Being socially active can give u a more positive outlook on life
