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What is an expected finding for a 12-month-old infant based on their birth data?

  1. The infant weighs 6.4 kg (14 lb)

  2. The infant is 101.6 cm (40 in) long

  3. The infant is 76.2 cm (30 in) long

  4. The infant weighs 14.5 kg (32 lb)

The correct answer is: The infant is 76.2 cm (30 in) long

The expected finding for a 12-month-old infant is a length of 76.2 cm (30 inches). At one year of age, infants typically grow to about 50% longer than their birth length. Since the average newborn is around 20 inches long at birth, counting forward, a length of approximately 30 inches aligns with developmental expectations for this age. This measurement reflects normal growth patterns and developmental milestones typically seen in infants. The other choices present measurements that are either lower or significantly higher than what would be expected for a 12-month-old. For example, a weight of 6.4 kg (14 lb) would be much less than the average for infants at this age, and 101.6 cm (40 in) is unusually tall for a one-year-old, falling outside the range of typical growth patterns. A weight of 14.5 kg (32 lb) for a one-year-old also surpasses the average weight expectations for this age group, indicating that it does not fit within the normative growth parameters either.