The correct response given by the doctor is: "Your body doesn't have the ability to protect itself because of its damaged immunity. You must do your exercises regularly".
Explanation:
JV is very intelligent guy. He is suffering from mucus secretion. Doctor advised him to do some exercises to get free from this problem. Mucus is a slimy substance secreted by the mucus membrane. It causes respiratory infection.
JV was not interested in doing the exercises. He enquires to doctor that is it okay to do exercises when he is not feeling well, in-spite of doctor’s advice. Doctor responded that JV’s lacks his immunity power, so it is must for him to do exercises regularly.