Ok sure do you want me to type it here?
Answer:
It emphasizes the theme of sorrow and melancholy in the poem.
Your answer is B I found a large, smooth ,rock at the beach yesterday because it is not D because theirs a punctuated after and its not A because it slows the sentence down when it came down to B,or C I choose B because the puntions seem in the right place.
Years your answer is B.
P.S if not B choose C but I'm with C.