The answer is:
Age
This is because if your young your organs are not as developed. When your older your body handles more because it is developed fully.
Aster work on soft tissue and produce less waste
Give a gift that represents the place that u live
D.) Both A and C.
Because your body will learn that i will get food more frequently even if is just a small portion and will burn more fat(energy) during that short time period and breakfast is the first meal of the day after nit eating for at least 8 hours you need the energy to start your day and so your body has the energy to do things that would make you feel more healthy and with energy.