Old man Oyster’s interaction with the government employee illustrates the theme of “Gumption” through his willingness to stand up for what is right, even at a significant personal cost. The relevant response that best embodies this theme is:
He argues with the government employee about the merits of education and experience until he ends up in jail.
This response reflects old man Oyster's determination to advocate for his son and address what he perceives to be an injustice. His confrontation, resulting in his imprisonment, underscores the idea that standing up for one's beliefs can involve risk and sacrifice. It highlights the theme of gumption by demonstrating that taking a stand is vital, regardless of the dire personal consequences one may face.