An 18-year-old girl was taken to the hospital with high blood pressure and headaches. doctors noticed that she looked very thin and discovered she had a heart problem. after talking with her, the doctor discovered that her symptoms were caused by dieting. which type of diet would most likely cause these types of difficulties?

By thinking through this question, and thinking deeply in it, i would say that the A, would fit the best. Why?
because if you fast in the wring way, or after fasting eat a lot, that gives a lot of pressure to your body, and that may really give a lot of problems. our organism needs food daily, and if we do not do that always, then at least twice a day. but yes, in my own experience, i used to fast, and if i do, and after start eating, like meat, or something this hard, then my head hurts, my stomach growls, and it is not well.
Hope that this helps you!
Good Luck! =)