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How does the poem's mood and tone change in each of these stages of “o captain! my captain! ” by walt whitman? (i need an answer asap )

Who is ¨ the guilty party¨ at the end of the text, and how do his actions contribute to the storys theme?

Apolitical campaign showing the candidate wearing a hard hat and work shirt while touring a factory is using oa) glittering generalities. ob) transfer appeal. oc) testimonial. od) plain folks appeal.