The dialogue between Nick and Mr. Gatz reveals that Mr. Gatz does not realize that his son's greatness was attained through shady and illegal activities.
Mr. Gatz is Jay Gatsby's father in the novel "The Great Gatsby." He reads about the death of his son in the newspapers and then comes to his funeral. That is when he interacts with Nick, the narrator.
Their dialogue reveals that Mr. Gatz is very proud of his son and everything he accomplished. He does not realize that Gatsby's greatness was attained through illegal activities, such as selling alcohol when it was forbidden.
With the information above in mind, we can select option D as the correct answer.
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