Which detail from the text best supports the claim thatGrandpa's surprise visit creates a conflict for Martin?

he detail from the text that best supports the claim that Grandpa's surprise visit creates a conflict for Martin is Martin puts his head down and tries to pull away his hand

Martin has conflicts with himself about how does he feel towards his grandfather in several moments in the story where he is ashamed and at the same time doesn't know how to react.

The other options don't show any kind of literary device.