31. How many babies are born to women and girls under age 20 in the United States each year?

A. more than 100,000

B. more than 200,000

C. more than 300,000

D. more than 400,000

32. Which of the following is true about pica?

A. It involves the eating of insects.

B. It is more common among Asian American women.

C. It is associated with low levels of iron in the blood.

D. It is not linked to any negative health consequences.

33. Mothers who are ________ are at a higher risk of delivering SGA babies.

A. underweight

B. overweight

C. younger

D. older

34. What behavior during pregnancy increases the risk of sudden infant death syndrome (SIDS)?

A. overeating

B. drinking coffee

C. vigorous exercise

D. smoking cigarettes

35. Doctors recommend that most pregnant women engage in at least ________ minutes of exercise a day.

A. 15

B. 30

C. 45

D. 60

36. Severe edema in pregnant women may be a symptom of what health condition?

A. eclampsia

B. macrosomia

C. preeclampsia

D. gestational hypertension

37. What triggers the letdown response in breast feeding?

A. prolactin

B. oxytocin

C. colostrum

D. alpha-lactalbumin

38. How does the protein lactoferrin help protect infants against harmful bacteria?

A. It acts as an antioxidant.

B. It expels bacteria in the stool.

C. It makes iron unavailable to bacteria.

D. It kills bacteria by raising body temperature.

39. What infant health problem may result from a deficiency of folic acid during pregnancy?

A. FTT

B. SIDS

C. spina bifida

D. Down syndrome

40. Eclampsia is a very serious condition that may result from ________ during pregnancy.

A. drug use

B. dehydration

C. hypertension

D. nutrient deficiency