When the general, nursing his bruised shoulder, had gone, Rainsford took up his flight again. It was flight now, a desperate, hopeless flight, that carried him on for some hours. Dusk came, then darkness, and still he pressed on. The ground grew softer under his moccasins; the vegetation grew ranker, denser; insects bit him savagely. Then, as he stepped forward, his foot sank into the ooze. He tried to wrench it back, but the muck sucked viciously at his foot as if it were a giant leech. With a violent effort, he tore his foot loose. He knew where he was now. Death Swamp and its quicksand. What technique does the author of this passage use to evoke emotions in the reader?

A) The author uses a flashback from the narrator's youth to make the reader uneasy.
B) The author's use of a first person perspective creates a sense of unease and discomfort.
C) The author's use of frightening imagery with a setting named "Death Swamp" creates tension.
D) The author's use of dialogue implies that something stressful is soon to occur.