Brandon,a 6-Year-Old,was Diagnosed with Autism at Age 2

Brandon,a 6-year-old,was diagnosed with autism at age 2.Since then,he has been receiving a treatment called applied behavioral analysis (ABA) .Which of the following outcomes is most likely for Brandon after four years of receiving ABA,according to research presented in your textbook?

A) Brandon has a higher IQ than before he started.
B) Brandon has excellent social relationships with family and friends.
C) Brandon's language use is significantly better than before he started.
D) Brandon engages in almost normal levels of symbolic play.