Core conditioning looks to improve
a. strength in the quadriceps and hamstrings.
b. the ability to catch.
c. stability that comes from the trunk and the spine.
d. how well a person can stretch.

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