The correct answer is D, the repetition intensifies the speaker's sense of urgency.
The use of the word "must" in this excerpt does not show any sign of anger. Anger could be expressed by the use of exclamation marks, for example, or adjectives, but not by the use of "must". Therefore, it also doesn't suggest that the speaker is intimidating or demanding.
The use of repetition is what gives us the sense of urgency. By being followed by different sentences, always using the word "must", we feel that this is important and we need to hurry up and do it.
He is doing C. I say this because this statement talks about how O Henry uses similar methods to develop characters but at the end they come out different
It is expressing because a text of literature is not a true story it might be what the author or character is thinking but may be false to other people.
