Benjamin Was Not Making Progress with Achieving Functional Communication Use

Benjamin was not making progress with achieving functional communication use of his AAC system.His choice of symbols to select referents was randomly made at best.His speech-language pathologist was at a loss about what to do next.He should

A) Examine visual acuity and perception.Perhaps there are too many symbols on the array or the perceptual characteristics of the symbols are too similar.
B) Continue with behavioral training to teach matching the symbol to the referent.Sometimes learning takes years.
C) Dismiss Ben.He cannot learn to use an AAC system functionally.
D) Place Ben in a group session.He can no longer justify individual sessions for him because of lack of progress.