All of the above would be the awnser
C. maintain a regular exercise program
The carotid baroreceptors become less active, venous return is decreased, heart rate is reflexively elevated, and reflex vasoconstriction of peripheral blood vessels occur.
Well because it is the amount that the nutritional facts are given on, say you buy a box of donuts, and it says 80 calories that could be for a 2 donuts for 1 for the whole package but knowing the serving size you can base how much you eat etc
