Maintaining a healthy weight comes down to moderation and
a. serving size
b. portions
c. nutrients consumed
d. protein consumed

The answer would be portions. To grasp or maintain at a healthy weight, how much you eat is just as vital as what you eat. A portion is how greatly food you select to eat at one time, whether in a diner, from a set, or at home. This is different from a serving size. This is the quantity of food recorded on a produce's Nutrition Facts.

Is the essay common sense?