Users of American Sign Language sometimes experience the phenomenon of not being able to retrieve a particular sign when they feel sure that they know the sign. This phenomenon in users of sign language is called: A. the tip-of-the-fingers phenomenon. B. source confusion. C. the tip-of-the-tongue phenomenon. D. retrograde amnesia.

A. the tip-of-the-fingers phenomenon

Explanation:

Tip of the finger is the parallel of tip of the tongue in spoken wods where a sign is unable to be retrieved from memory. These are signs they have used on some other occassions before but at the present moment when they need it cannot recollect it.

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