The best response to how the rhyme and meter in the stanzas affect the meaning is: They contradict the speaker's struggle by creating a songlike pattern.
Although the speaker is experiencing a deep internal conflict and struggle with their emotions, the structured rhyme and meter create a sense of harmony that contrasts with the turmoil and pain expressed in the content. This juxtaposition emphasizes the conflict between the speaker's feelings and the order found in the poem's form.