Which of the following is a gross motor red flag for an infant?

The identification of a gross motor red flag is crucial in assessing the developmental progress of an infant. Not rolling over by 2 to 3 months of age is indeed a significant milestone that should be observed. Rolling over is one of the early indicators of gross motor development, reflecting an infant’s ability to engage their core muscles and demonstrate coordination and balance.

At this age, the expected gross motor skills include some movement on the stomach (tummy time) and the ability to roll from front to back or back to front, which signifies that the infant is progressing in their physical development. Failure to achieve this milestone by 3 months could indicate delays in muscular development or neurological issues, warranting further evaluation and monitoring.

In contrast, the other options relate to different developmental domains. Speech and language development, as well as social communication skills, are being assessed, which are important in their own right but are not categorized under gross motor skills. Thus, the focus on rolling over provides a clear basis for classifying that aspect of development as a red flag when it is not achieved in the expected timeframe.