I think it’s B I’m not sure
Answer:
So, the essay is about whether "Nothing Gold Can Stay" ?
Explanation:
In the third sentence we know that "nothing gold can stay" is a poem so there's no need for you to add in the fourth sentence "it is a poem becasue..." Instead try to say "The poem demostrates the elements of sound, imagery, and figurative language."
Symbolism
a metaphor that sustains the comparison for several lines or a whole poem
personification
These would be college words.