Prospero stops the show because he suddenly remembers that Caliban has issued a challenge, and the hour of that challenge is almost there. Ariel asks Prospero what's wrong, after he abruptly stopped the show, and he responds with "We must prepare to meet with Caliban" which shows where his mind is.
Answer:
A feeling or concept that would be hard for readers to grasp.
Explanation:
Analogy - A comparison between two things, typically for the purpose of explanation or clarification.
Wasn't he like surprised or something?
Both of the men are determined to “break” Douglass