Question

Danielle, a college senior, is trying to remember the names of the classmates that attended her high school graduation party but cannot. it is most likely that

Answer 1

The answer is "she has not yet found the cues that will help her retrieve the information from long-term memory."

A long term memory is anything you recollect that happened in excess of a couple of minutes prior. 
Long-term memories aren't all of equivalent quality. Stronger memories empower you to review an occasion, technique, or certainty on request. Weaker recollections frequently ring a bell just through provoking or reminding.