Answer: B) he and Daisy are not a happily married couple.
Step-by-step explanation: In the given excerpt from "The Great Gatsby" we can see the description of a situation where Tom and Daisy are eating dinner with some guests, and suddenly, Tom receives a phone call, he answers the call, despite his wife's disapprobation. This situation repeats several times during dinner, the phone is even referred to as "the fifth guest." This phone calls that Tom receives during dinner are an indicator that he and Daisy are not a happily married couple.