Jack Is 6 Years Old, but Does Not Communicate with Speech

Multiple Choice

Jack is 6 years old, but does not communicate with speech, is not able to interact with other children, does not engage in normal forms of social play, and seems caught up in his own internal world. The most likely diagnosis for Jack is:

A) autism spectrum disorder
B) dyslexia
C) attention deficit-hyperactivity disorder
D) mental retardation