If you add 1/4 and 1/3 together (or 0.25 and 0.333...) you get 7/12
7/12 of the pie is left
Poetry tells a story and expresses emotion in a way that is concise, emotionally charged, and musical. There are different types like a narrative and lyric. A narative tells a story, which has a plot and characters. A lyric poem is more about feelings and emotions. The speaker is the character.
I would say Imagery and mood. as for the others, there is no characterization, conflict or irony in this, as for foreshadowing it doesn't seem to be showing anything.
I hope I helped