Answer:
The answer is the Immune system (a).
Explanation:
The immune system consists of agents that help your body fight against pathogens and other invading substances. It has your white blood cells, enzymes, mucus, hydrochloric acid (in your stomach), and even your saliva. All these substances help make sure your body is rid of anything that may bring harm to you!
Answer:
Try to change the client's delusional belief
Attempting to collect the balance due at the time of service can serve for income purposes. It can guarantee that the doctors and the people involved with the procedure can get paid and the costumer will have the chance to access a proceudure. But actualy there are more disadvantages because the medical body can be sued and that they can not get paid if the patient does not feel that the procedure was good. It doesn't cover some expenses and it may not be comfortable neither for the patient nor for the doctors