Answer:
The answer is most likely A) Because the last line breaks the rhyming pattern, the poem gives extra emphasis to its main topic
Explanation:
President Kennedy makes intensive use of parallelism and antithesis for the sake of persuasion and to make his speech more appealing to the audience. Antithesis is a rhetorical device which is used to contrast two ideas or things in a parallel sentence. Parallel structure is a literary device which consist of a repetition of some pattern of words. These stylistic devices offer the reader a more pleasant speech as well as it makes the speech easy to understand the main idea of the thought.
Example: "Let us never negotiate out of fear, but let us never fear to negotiate."
Answer:
A. narrator reveals that he committed the murder
Explanation:
In "The Tell-Tale Heart", the narrator is shown to have created the perfect plan; everything went his way and if he hadn't said anything, the police would have never found the body.
Thus, one would expect the narrator to have gotten away with the murder.
However, though options B and C both were expected by the reader (he had explained previously that this was what he had planned on doing), the narrator openly revealing that he had committed the murder would come as a surprise.
So, the answer is A.