How does a 12-month-old child’s development appear based on their behaviors during a well-child checkup?

At 12 months of age, a child's development across various domains is generally expected to fall within certain typical milestones. For motor skills, a child should be able to crawl, pull up to stand, and possibly take a few steps. Therefore, a normal motor development would indicate that the child is displaying these abilities competently.

Socially, by this age, children typically exhibit behaviors such as showing attachment to caregivers, engaging in social play, and demonstrating an interest in the emotions of others. Thus, normal social development would mean the child is active in social interactions and displays healthy attachment behaviors.

In terms of language, at 12 months, children are expected to say a few words, such as "mama" or "dada," and understand simple commands, indicating budding language development.

Given these norms, if a child is noted to have normal motor and social development but delayed language skills, it can indicate that the child is reaching typical milestones physically and socially but may need additional support or evaluation regarding language acquisition.

This understanding aligns with the option that indicates normal motor and social development while showing delayed language abilities, which reflects the nuances of typical developmental trajectories for a child's first year.