which of the following are key to keeping serious illnesses arise? select the best answers that aply.
A. medication
B. rehabilitation
C. recognizing problems
D. early intervention

The amount of oxygen that is actually used by the body during the rest or a hand workout is determined by the heart rate, the stroke volume, and the amount of a. blood circulating in the vascular system b. oxygen removed from the vascular system c. oxygen provided to the vascular system d. blood that individual has in the body e. hemoglobin in the red blood cells