Nick thinks that, given the state of their marriage, Daisy should leave Tom, but it is clear to him that she has no intention of doing so. What indication is there that Tom and Daisy are closely linked despite their marital difficulties?

Answer: This excerpt is from the book The Great Gatsby written by written by American author F. Scott Fitzgerald.

In the book, the indication that Tom and Daisy are closely linked despite their marital difficulties is that Tom and Daisy are both quite set in their ways, are so used to wealth and living a luxurious life. They both belong to the "secret society", and do not associate much with the lower class.