Answer: Daisy is Nick's second cousin, once removed.
Explanation:
Nick, Daisy and Tom are characters from <em>The Great Gatsby</em>, a novel by F. Scott Fitzgerald.
Nick knows Daisy and her husband, Tom, because Daisy is Nick's second cousin, once removed. Moreover, Tom and Nick went to college together at Yale, but Nick was not very fond of Tom back then. Nick says that he spent two days in Chicago with them, shortly after the war ended. Nick and Daisy are not very close, but are reunited at the beginning of the novel, when Nick moves to West Egg.
A statement or theory that is put forward as a premise to be maintained or proved
The literary device used in these lines is Personification.
The personification is a figure of speech in which a thing is given human attributes. The non-human objects are portrayed in such a way that we feel they have the capacity to act like human beings. This device makes the piece more interesting to read and makes it more sensitive to the reader.