A nurse is collecting data from a 6-month-old infant during a well-child visit. Which of the following findings should the nurse report to the provider?

At 6 months of age, infants should be making a variety of consonant-vowel sounds, including babbling such as 'ba,' 'da,' or 'ma,' and beginning to imitate sounds heard from caregivers. The nurse's notes indicate the infant only makes cooing sounds and does not attempt to imitate speech. Cooing is a developmental milestone typically seen between 2 and 3 months of age. By 6 months, infants should have progressed to babbling and vocal imitation. Failure to advance beyond cooing by 6 months is a speech and language developmental red flag that warrants reporting to the provider for further evaluation of possible hearing loss or developmental delay. The infant's weight of 7.26 kg falls within normal range for a 6-month-old male, who is expected to weigh approximately double their birth weight; this infant has nearly doubled their birth weight of 3.6 kg, which is appropriate. The temperature of 37.1°C is within normal limits and does not require reporting. The presence of two lower central incisors is developmentally expected, as eruption of central incisors typically occurs between 6 and 10 months of age. Therefore, the speech finding is the only result that requires provider notification, as it indicates a potential developmental delay in communication milestones.