Actually, I looked it up, and it says it helps create a tone for the poem. So, I would say D. "the author's tone". Hope that helped, good luck! :)
B. the connotation
Correct me if I'm wrong though...
Thank you
No problem
Rhythm in a poem can help convey multiple elements. In this case, it can help convey the poem's pattern, C, and the poem's verse, C. Rhythm refers to the pattern of stressed and unstressed syllables, the arrangement of long and short sounds, and the overall flow of the poem. This pattern can create a sense of musicality and cadence that enhances the poem's message and emotional impact. Additionally, the rhythm can contribute to the poem's overall structure and form, often aligning with the specific verse or stanza structure employed by the author.