Although the options are not provided, the answer to this will be C. diagram the flow of oxygen-rich blood through the body of a non-smoker. Then diagram the flow of blood with less oxygen through the body of the smoker. The model will relate the effect of smoking, which is the constriction of the blood vessels, with a factor that directly relates to the athletic performance of an individual, which is the ability to supply oxygenated blood to various parts of the body.