Catalyst or triggering event
<span>"Could frame thy fearful symmetry"
</span>
It's A. Because a simile is a fugue of speech involving the comparison of one thing to another thing of a different kind.
Maybe put it in parenthesis or maybe wait until the next paragraph. I'm not sure it all depends on your teacher.
It helps him satirize an educated Easterner's point of view. He wants to focus on the storyteller's perspective.
