Girls who just want to be friends

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 )

Read the passage and choose the correct punctuation marks

Gulliver's attempt to imitate the houyhnhnms gulliver to accept himself as he is causes gulliver to hate himself and other humans improves gulliver's character causes gulliver to be patient with people's problems next