Plz help im timed on edg

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 )

Pls excerpted from "hope is the thing with feathers" by emily dickinson [2] and sweetest—in the gale—is heard— and sore must be the storm— that could abash the little bird that kept so many warm— [3] i've heard it in the chillest land— and on the strangest sea— yet, never, in extremity, it asked a crumb—of me. in the last stanza, the author writes that the little bird “never … asked a crumb of me.” which type of figurative language is evident in these lines? a. onomatopoeia b. alliteration c. assonance d. personification

What type of persuasive appeal seeks to show that an argument is correct or valid