yes, the answer is b) high cost
The answer to 23 is, exercise helps by reducing the the chances of heart disease, improve daily living and sports because of less fatigue (tiredness), and decrease the changes of getting sick. Sorry I don't know the answers to any of the others
He should lower the speed he is going on the steps that way his heart rate won't go up too fast.
The answer is definitely that the provider’s success claims seem too good to be true.