Stomach acid helps protease enzymes to destroy harmful microorganisms that may be present in the food. Fats and oils, or lipids, provide insulation and an energy store for our bodies. Helped by bile from the liver, lipase enzymes break down the lipids into fatty acids and glycerol, so they can be stored.
Answer: nervous and endocrine system.
Central nervous system(CNS) is needed to send a signal to many organs to work. Damage in CNS can cause you to stop breathing. The endocrine system is keeping the body healthy by make sure that the blood concentration of glucose and other molecule is enough to sustain life, but not too much to cause damage.
It would be C. Despositon. I now this because i am the one answering all your questions and trying to help you through this