Matthew's Parents Are Concerned About the Possibility That He Might

Multiple Choice

 Matthew's parents are concerned about the possibility that he might have either a hearing loss or autism spectrum disorder, as he has not learned to speak and is not responsive to their efforts to speak to him. Which of the following technologies might assist Matthew's physician in making an accurate diagnosis?

A) analysis of evoked potentials
B) PET
C) CT
D) fMRI