Which of these is the best way to increase your overall physical fitness?
a. focus on cardiorespiratory endurance and muscle tone.
b. focus on building muscles and looking good.
c. manage your weight and the rest will follow.
d. focus on all aspects of physical fitness.

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.