I would say E as it has to do with nutrition and dietetics and they would be registered.
Answer: The main organs that make up the digestive system (in order of their function) are the mouth, esophagus, stomach, small intestine, large intestine, rectum and anus. Helping them along the way are the pancreas, gall bladder and liver. Here's how these organs work together in your digestive system.
Explanation: Hope This helps :)
D. The petting animals option. Mainly because that answer has nothing to do with food and everything to do with regular germs :)
The answer is b, it can guide treatment of cardiac disease