Definetly A. They work on the ability to supply oxygen to the lungs from the heart, to help them run.
Athletic level or body type
This is true among this age range
The late stage is where the body and the mind start to fail. It could take weeks or maybe years to get to this stage.
CANCER, DIABETES, AND IMMUNE SYSTEM diseases are diseases that are considered non-infectious. Non-infectious diseases are diseases that are caused by surrounded factors, lifestyle factors, environmental toxins, and etc.
Or is this a multiple choice question? If it is, what are the choices?