During a developmental screening of an 8-month-old, what oral motor development skill is the child likely to demonstrate, according to normal limits?

At 8 months of age, typical oral motor development includes the ability to demonstrate diagonal jaw movements. At this stage, infants are refining their oral skills as they begin to explore solid food textures. Diagonal jaw movements are crucial for moving food around in the mouth and are indicative of the development of more complex oral motor skills needed for chewing.

This age marks a progression from earlier oral motor patterns, such as simpler up-and-down jaw movements. By 8 months, infants can manipulate food more effectively, using the side-to-side movements to aid in chewing and preparation of bolus before swallowing.

The other options represent skills that are either not yet fully developed at this age or are more advanced than what is typically expected for an 8-month-old. For instance, coordinated chewing and circular jaw motions tend to develop later, as the child grows and their oral motor skills become more sophisticated. Similarly, single tongue movements are more basic and may not showcase the advancement seen in diagonal movements at this developmental stage.