By the time they are 12 years of age.
Hope I helped!!
Giving me brainliest answer helps a lot and is very appreciated =)
A will be the answer because usually marking your exercise days will become a habit because lets say you would do a running exercise but you want to do it in a certain day well if you mark it on the calendar, it'll become a habit.
<span>The purpose of Food Supplements is to add on a normal diet with nutrients or other substances with nutritional or physiological function. Food supplements may consist of vitamins or minerals, different types of herbs or vegetable extracts, amino acids, fatty acids or fibres in forms of tablets, pills, capsules or liquids in measured doses. There </span><span>are three categories of claims that are defined by statute and/or FDA regulations: health claims, nutrient content claims, and structure/function claims.</span>
