What are the answer choices???
This type of figurative language is a simile. This person is is being compared to a hornet, which aren't "mean" insects.
The correct answer is "I heard many things in hell. How, then, am I mad? Hearten! And observe how healthily-how calmly I can tell you the whole story."
Explanation: The narrator of "The Tell-Tale Heart" is unreliable because in this excerpt he claims to hear something that is supernatural, and states that the proof is in his narration. His tone is nervous and shows that he is panicking while attempting to convince the reader that he is calm, and not crazy.