Which word identifies the kind of sentence that contains the main idea?

Synthesizing new ideas from a speaker with what one already knows about the subject to see if the information makes sense is an example of a) questioning and challenging b) identifying differences c) forming a statement d) seeing the broader context

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 )

What is the effect of narrator's word choice on the tone of this passage? the words "my heart shrank within itself" create a fearful tone. the words "better-omened" set a hopeful tone. the words "wounded his fellow" develop a remorseful tone. the words "struck harsh upon my ears" suggest an irritated tone.