Answer:
The excerpt is found in the last chapter, Chapter 9 of the novel. It concludes the novel.
Step-by-step explanation:
"The Great Gatsby" by Francis Scott Fitzgerald is a tragic story of the protagonist Jay Gatsby in his pursuit of his previous love Daisy Buchanan. The twist in the story led to the deaths of Gatsby and myrtle, Tom's lover.
The above provided excerpt is from the last chapter of the story where Nick Carraway had gone back to Gatsby's place. There, he thinks of how Gatsby had blindly believed in the green light, 'the supposed bright future' that he had envisioned for himself and Daisy. These lines form the closing sentences of the whole novel, ending it.