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 st
roke 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
Explanation: the reasoning for this is to check to see if the person is okay. then call for help if they are not. if they still are not then you care for them. or get care :))