Answer: A. tip-of-the-tongue phenomenon
Given choices are:
A. tip-of-the-tongue phenomenon
B. recency effect
C. primacy effect
D. retrograde amnesia phenomenon
Tip of the tongue, shortcut TOT is the tendency to forgot a word, combined with partial recall and a feeling that he really knows the word. The name of the phenomenon “tip of the tongue” comes from the saying, "It's on the tip of my tongue."