What role does the "grey ice-field" in "One Minute Longer" play in the development of the story?

AThe setting helps create the main conflict of the story

BThe setting is the backdrop for the plot

CThe setting does not develop the story; it is there, but it does not play a role in the story.

DThe setting is metaphor for the themes in the story.

(DO NOT DELETE QUESTION IF YOU DON'T KNOW)