Answer:
every other stanza they author changes the rhyme scheme (weep, sleep; bare, hair etc). the poem is set up with 4 stanzas per segment with between 9-10 syllables per stanza. the title tells me the story is about a chimney sweeper.
A, B
Explanation:
While C and D are also important factors in giving a speech, they do not specifically help create a friendly and comfortable tone.
The answer is "brainstorming"