If you are talking about this website, then A Forum for Publishing.
If you are talking about your actual question with the answers underneath, it would be none of the above.
I think you might be missing a link or a picture though.
Answer:
It can be any so all of the above
Explanation:
The answer is: structure.
The division of a poem has to do with its structure. It is written in stanzas and lines. The use of rhythm, the lenght, the placement and the grouping of the lines and the stanzas are also important to divide the poem and to express the ideas the writer wants to.
Poe creates contrast in his portrayal of the bird in "The Raven" by placing the black bird on the marble statue. The contrast between the darkness of the bird and the whiteness of the statue is quite striking, exactly the thing he wanted to achieve.