Final answer:
The passage suggests that Tom and Daisy's marriage is troubled by Tom's affair with a woman in New York.
Step-by-step explanation:
The passage reveals that Tom and Daisy's marriage has issues due to infidelity. Tom is having an extramarital affair with a woman in New York, a fact that seems to be common knowledge to everyone except the speaker. This information comes up due to a phone call during dinner, which is implied to be from Tom's mistress, indicating a lack of discretion and respect for his marital relationship with Daisy.