A nurse is collecting data from a 4-month-old infant at a well-child visit. For which of the following findings should the nurse notify the provider?

Fontanels are soft spots on an infant's skull where the bones have not yet fused together. The anterior fontanel, located at the front of the head, typically closes between 12 to 18 months of age. The posterior fontanel, located at the back of the head, usually closes by 2 to 3 months of age. The other findings mentioned are typical developmental milestones for a 4-month-old infant: 1. Rolling from back to abdomen: By 4 months of age, it is expected that infants can roll from their back to their abdomen. This is a normal developmental milestone. 2. Moves objects to mouth: At 4 months, infants begin to develop hand-eye coordination and the ability to reach for objects. Bringing objects to the mouth is a typical behavior at this age as infants explore their environment.