A 2-year-old girl presents with her parents to the clinic for a well child visit. Her mother expresses concern that she does not respond to her name when called. She is able to run, walk upstairs, build a 6-block tower, play with other toddlers at day care, and says a few words but mostly babbles. She does not say two-word phrases. She is at the 45th percentile for height, 56th percentile for weight, and 57th percentile for head circumference.
There is no personal or family history of serious illness. Which of the following is the most likely diagnosis?
- A) Attention deficit hyperactivity disorder
- B) Autism spectrum disorder
- C) Hearing impairment
- D) Motor delay
- E) Normal development