Helpoo please

If an older person went to the doctor with a fever, chills, body aches, and a cough, what would the doctor most likely suspect the person has?

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

When comparing the digestive and urinary system, we can conclude that they both