If babies are consistently placed on their backs without any restrictions, what will happen to their development ?
A. they suffer from weakness in certain muscle groups
B. their ability to roll over , crawl, and eventually walk is hindered .
C. they suffer brain damage from the pressure on the back of the head
D. they learn to roll over , crawl, and eventually walk on their own .

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.