The nurse has seen a 15-year-old girl and a 16-year-old boy during health surveillance visits. Which physical characteristics would be seen in both teenagers?

A. The heart triples in size over the first year of lifE. While cardiac growth occurs during infancy, the described change is not specific to a developmental milestone.

B. Most infants triple their birth weight by 4 to 6 months of age and quadruple their birth weight by the time they are 1 year olD. This statement accurately describes a significant developmental milestone related to physical growth during infancy.

C. By 6 months of age, the infant's brain weighs half that of the adult brain; at age 12 months, the brain weighs 2.5 times what it did at birth: This statement describes brain growth rather than a

milestone related to physical growth or development.

D. The head circumference increases rapidly during the first 6 months: the average increase is about 1 in per month: While head circumference growth is important, it does not specifically relate to the described developmental milestone of weight gain during infancy.

A. Substituting cow's milk if breast milk is not availablE. Cow's milk is not recommended as a substitute for breast milk or infant formula for infants under 12 months old due to its low iron content and potential for causing gastrointestinal irritation.

B. Advising fluid intake per feeding of 5 or 6 ounces: The appropriate fluid intake for a 2-week- old infant is typically guided by feeding cues and may vary from feeding to feeding. Providing a specific volume of fluid per feeding may not be appropriate, as infants should be fed on demand.

C. Advocating iron supplements with bottle-feeding: Iron supplementation is generally recommended for breastfed infants starting at around 4 months of age, but it is not typically necessary for formula-fed infants during the first few weeks of life. Additionally, iron

supplementation should be prescribed and monitored by a healthcare provider rather than advocated as a general guideline.

D. Discouraging the addition of fruit juice to the diet: This is the most effective anticipatory guidance because it aligns with current recommendations from pediatric healthcare

organizations. Fruit juice offers little nutritional value for infants and can contribute to dental caries and excessive calorie intake. It is generally recommended to avoid giving fruit juice to infants under 1 year old.