Final answer:
The narrator in "The Tell-Tale Heart" is trying to persuade readers that he is not insane.
Step-by-step explanation:
In "The Tell-Tale Heart", the narrator is trying to persuade readers to believe that he is not insane. He provides evidence from the text to support this claim. For example, he argues that he is not mad because he carefully planned and executed the murder without any mistakes. He also emphasizes his ability to hear the beating of the old man's heart after the murder, asserting that this hyper-awareness is a sign of his sanity.