Answer:
cue-dependent forgetting
Step-by-step explanation:
The forgetfulness of the professor can best be explained by cue-dependent forgetting. Cue-dependent forgetting is the failure to recall information when we do not have cues that give us "clues." Most of the time, these cues are context-dependent, like in the case of the professor. Without the "cue" of the academic context, he was unable to retrieve the information necessary to remember the student's name.