Final answer:
Tom's need for an affair is a reminder of the issues of money and class in the novel 'The Great Gatsby'.
Step-by-step explanation:
The reminder of the issues of money and class in the novel 'The Great Gatsby' can be seen in option D, Tom's need for an affair.
Throughout the novel, Tom Buchanan represents the wealthy upper class, and his affair with Myrtle Wilson, a working-class woman, highlights the divide between the social classes. Tom's infidelity reflects the idea that the wealthy believe they can use their money and status to escape the consequences of their actions.
For example, Tom feels entitled to have an affair because of his wealth and privilege, while Myrtle gets drawn into an unhealthy relationship believing that it will elevate her social status.