13. when comparing hemodialysis and peritoneal dialysis, it can be said that
a. peritoneal dialysis involves the removal of blood from the patient.
b. peritoneal dialysis doesn't need a dialyzer to work, whereas hemodialysis does.
c. hemodialysis takes longer than peritoneal dialysis.
d. hemodialysis is a step closer to the need for transplantation compared with peritoneal dialysis.

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