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
Answer:
Againg population that's the answer
Second option is the answer
Wellness visits, it’s the visit your supposed to go to once a year.
