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

Choice A rationale At 6 months of age, infants typically begin to show a preference for familiar caregivers and may demonstrate stranger anxiety. However, the absence of fear of strangers is a developmental variation and not necessarily a significant red flag requiring immediate reporting. It is not an expected milestone failure at this age. Choice B rationale By 6 months of age, an infant should be able to roll from their abdomen to their back, as this milestone typically occurs between 4 and 6 months. Failure to achieve this motor skill may indicate a potential delay in muscle development or neurological function, which warrants a thorough assessment by the provider. Choice C rationale A 6-month-old infant is developing fine motor skills, such as raking objects with their fingers, but they are not yet expected to have the pincer grasp to pick up small objects with their fingers. This skill typically develops later, between 9 and 12 months. Therefore, this finding is a normal developmental stage. Choice D rationale The ability to sit on the floor unsupported is a milestone typically achieved between 7 and 9 months of age. At 6 months, an infant can often sit with support. Therefore, the inability to sit unsupported is a normal finding for a 6-month-old and does not need to be reported to the provider.