31. Which of the following situations or changes is not commonly observed among adolescents (9-19 years old)?

A. delayed menarche

B. rapid growth spurt

C. significant bone growth

D. hormonal and physical changes

32. During an adolescent’s growth spurt, approximately what percentage of adult height is typically attained?

A. 5 percent

B. 10 percent

C. 15 percent

D. 20 percent

33. What are the kilocalorie needs for an active adolescent female?

A. 1,400

B. 1,800

C. 2,000

D. 2,400

34. Over ________ of U.S. children and adolescents are overweight or obese.

A. one-sixth

B. one-fifth

C. one-fourth

D. one-third

35. What is the AI for calcium for adolescents aged 9 to 18?

A. 1,000 mg

B. 1,100 mg

C. 1,200 mg

D. 1,300 mg

36. The American Association of Pediatrics recommends that screen time for children be limited to no more than ________ daily.

A. 1 hour

B. 1 1/2 hours

C. 2 hours

D. 2 1/2 hours

37. According to recent research, more than ________ percent of children fail to meet the recommendations for vegetable intake.

A. 60

B. 70

C. 80

D. 90

38. Research shows that a child may need to be exposed to a food ________ times or more before accepting it.

A. 6

B. 8

C. 10

D. 12

39. The RDA for iron for boys aged 14 to 18 is

A. 15 mg.

B. 13 mg.

C. 11 mg.

D. 9 mg.

40. What percentage of children in the United States are reported to have a food allergy?

A. 8 percent

B. 10 percent

C. 12 percent

D. 14 percent