Answer:
C - Enjambment.
Explanation:
In poetry, enjambment means moving over from one line to another without a terminating punctuation mark. That is the case in this excerpt
Spring is like a perhaps hand (which comes carefully out of nowhere) arranging a window, into which people look (while people stare)
Those lines don't end with punctuation marks. We know it's not a metaphor as well because it uses the word "like". It's more of a comparison, in any case.