Well, using my limited knowledge, "cleaving" means to chop, break in half, split, etc. Twain means twice. So, perhaps it's like "you've broke my heart in half", something along those lines? hopefully this helps you.
Answer: C) It demonstrates poetry's ability to "arrest the vanishing apparitions" of life by preserving an image of a fleeting moment in time.
B, b, a
i hope these are right, i havent read the book in a few weeks.
