How do the shifts in setting from the blazing heat of day to the cold night on the lagoon provide a kind of commentary on arsat’s tale?

The correct answer is:  

The shifts reinforce the emotional extremes in Arsat's tale.

In "The Lagoon" (1896), a short story by Joseph Conrad, "Tuan" (meaning Lord or Sir) is a white man traveling through a rainforest in Indonesia. He will have to stay for one night with his remote Malay friend named Arsat, who is distraught because his lover is dying.

the answer is:

magna carta

is there a passage to this question if so plz take a picture