Occasionally a line of grey cars crawls along an invisible track, gives out a ghastly creak and comes to rest, and immediately the ash-grey men swarm up with leaden spaces and stir up an impenetrable cloud which screens their obscure operations from your sight.

Answer: the answer to this question is gloomy for A-pex

There are not options about the passage.

Explanation:

The excerpt belongs to The Great Gatsby, a novel by American writer Francis Scott Fitzgerald, which narrates the lives of characters around Jay Gatsby (and it tells his story, too,) a young millionaire.

This excerpt, usually known as the Valley of Ashes, is used to symbolize the depression related to the industrial area of Queens, between West Egg (the imaginary place where the story occurs) and Manhattan. Even though it is not made of ashes, it looks like that.