Respuesta :
Similes are a comparison using the words LIKE or AS. Therefore your answer is : "This is a valley of ashes—a fantastic farm where ashes grow like wheat into ridges and hills and grotesque gardens where ashes take the forms of houses and chimneys and rising smoke and finally, with a transcendent effort, of men who move dimly and already crumbling through the powdery air."
Answer: "..where ashes grow like wheat into ridges and hills and grotesque gardens."
Explanation: A simile is a figure of speech that consists in making a comparison between elements that aren't obviously related, this comparison is made using the words "like" and "as." In the given excerpt from "The Great Gatsby" by F. Scott Fitzgerald, we can see an example of a simile that compares the way ashes grow with ridges and hills ("a fantastic farm where ashes grow like wheat into ridges and hills and grotesque gardens").