How might getting involved in a meaningful activity enhance a person’s sense of self?

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.

the hyperactive and edgy feeling that comes when there is too much sugar in the blood stream. the actual amount of food that is eaten in a single meal. food with a high glycemic index is digested slowly.

true.