The following question is about the poem "At Night" by Yone Noguchi.

At Night by Yone Noguchi

At night the Universe grows lean, sober-
faced, of intoxication,
The shadow of the half-sphere curtains
down closely against my world, like a
doorless cage, and the stillness chained by
wrinkled darkness strains throughout the Uni-
verse to be free.
Listen, frogs in the pond, (the world is a pond itself)
cry out for the light, for the truth!
The curtains rattle ghostlily along, bloodily biting
my soul, the winds knocking on my cabin door
with their shadowy hands.

Which of the following is the best example of a metaphor?
A)"of intoxication"
B)"The shadow of the half-sphere curtains down closely against my world"
C)"the world is a pond itself"
D)"bloodily biting my soul"