Which is NOT an example of augmentative

Question

communication?

story books, picture cards,
sign language, or a tape recorder?

Thanks for helping

Please explain your definition of augmentative communication.

I briefly researched this term and think that all four choices could be examples of augmentative communication.

We'll be glad to help you when we know your definition of augmentative communication.

Using signs,symbols, or pictures to supplement unintelligible speech articulation. I also was thinking that
all four examples could be examples.
But one is not--and I got confused.
please help

Only one of your choices does not use visual aids to supplement speech. That is the tape recorder. It's only auditory, so it is not an example of augmentative communication.