The stomach. The stomach uses both mechanical and chemical means to break down food into chyme and then the chyme travels through the small intestine.
Id go with A because the avg for 15 year olds is about 72ish to 100ish.
He should have made his description more understandable for Mrs. Miller. An average Pt isn’t going to understand things like dysplastic nevus.
A disease? there are no answer choices