Take a look at the sentence again:
Mrs. Martin, the hiring manager, explained that she would consider an interview
if Lester remembered to wear shoes, comb the crumbs out of his beard, and
__________.
The blank requires an infinitive phrase. You chose he needed a tie, not a shark-tooth necklace, which is a main clause and thus causes a parallelism error. Before you continue, review the rules for parallel structure.
Go back to the sentence to try again.