Well, they are lacking in Iron if they have anemia. Soooo an iron supplement.
I would say, A. Endoscopy because, it is a tube that goes down the throat or the other way and looks through the digestive tract and the throat cavity.
This isn't a full essay but there is some helpful information about Backstrokes. (Tip: Make sure to paraphrase the info you use)
The Backstroke, also known as a back crawl is one out of four swimming styles you can use. Out of the four swimming styles, the backstroke is the easier as far as breathing but maybe be harder to swim hence the fact you can't see. Backstrokes are great for strengthening your upper body and helps tighten your core according to PopSugar. In order to master this style of swimming, you have to have balance. The backstroke engages all of your core.
