Which one of the following choices is most accurate about fat-soluble vitamins?

a. they can be stored in the body.
b. they build collagen and aid in healing.
c. they can cause gastric upset, diarrhea, and kidney stones.
d. they provide no risk of vitamin toxicity.

Andrew feels good about himself. he doesn't know exactly why he is so happy, but every day he looks forward to his schoolwork and chores. "i play a game," he says. "i make a list of everything i have to get done, and then i try to finish it all before a certain time. for some reason, i feel great when i beat my time." based on this information, why is andrew happy? he gets a proper amount of sleep he eats healthy meals he has a strong family support group he regularly meets his own goals