During a check-up, what should a nurse expect from a 24-month-old's fine motor skills?

At 24 months old, a child's fine motor skills are developing significantly but are still in the earlier stages. One ability that is typically observed in children around this age is the ability to turn the pages of a book one at a time. This skill indicates a certain level of dexterity and control, showcasing the child's growing hand-eye coordination and grasping abilities.

While other activities such as building a tower of six blocks, stringing beads, and coloring with crayons are also important fine motor tasks, they are typically more advanced skills. Building a tower of six blocks is generally more associated with slightly older toddlers, usually around 30 months. Similarly, stringing beads requires a refinement of motor skills that is often seen in children closer to three years of age. Coloring with crayons is another fine motor activity that children start to engage in around 15 to 18 months, but by 24 months, they may still lack the precision to color intentionally rather than just scribbling.

Thus, the ability to turn the pages of a book one at a time aligns well with the expected fine motor development for a 24-month-old, making it the correct answer for this question.