A) Gastrointestinal stromal tumors are most accurately found in the stomach or intestine but can be found in any part of the digestive tract and can be malignant or benign.
B) Cystic fibrosis is the genetic disorder that affects mucus, sweat and digestive glands majorly affect the lungs and digestive tract especially stomach and small intestine.
C) The peptic ulcer is the sores on the lining of the duodenum of the intestine and known as a duodenal ulcer.
Many cases of diarrhea are spread from person-to-person. The following precautions can help an individual avoid diarrhea and other viral or bacterial infections:
Improvement in sanitation for example, Children should be instructed to wash their hands frequently, especially after using the toilets.
Practice safe food handling. Always wash hands before and after handling food.
Drink clean drinking water and never eat raw or undercooked meat or seafood. Hence option C is correct.