Which sentence uses sophisticated vocabulary?

a. the clouds are moving.
b. look at the clouds!
c. there are clouds in the sky.
d. the sky is a beautiful turquoise blue with soft white clouds.

Realism was a fairly influential and widespread literary movement in the united states in the latter half of the nineteenth century. which american writer is among the pioneers of american realism? a. ernest hemingway b. f. scott fitzgerald c. j. d. salinger d. mark twain