Ineed at least 7 sentences i’ll mark !

Jocks are misinterpreted lots of times. Most of the times it's because of the things we see on TV. When someone sees a jock, they will mostly automatically think of them as a stuck up. Most of them are judged without reasoning. A lot of people also think there has to be a certain way one looks to be able to be called a jock. For example, a person who doesn't have lots of muscle is not classified with jocks. Muscles don't have anything to do with jocks, because they are just athletic people, and not all athletes are going to have huge muscles. The way they look can also be judged. If they don't look as good as the others then you won't consider them a jock. It really has nothing to do with physical appearance, but most people think otherwise.

answer(b) keep oxygenated and deoxygenated blood separate;

i think the answer is become an organ donor.