Final answer:
In the novel 'Shiloh', Marty Preston sees Judd Travers cheat Mr. Wallace at the store, which contributes to Marty's perception of Judd and sets the stage for their interactions.
Step-by-step explanation:
Marty Preston witnesses Judd Travers cheating Mr. Wallace at the store in the novel Shiloh by Phyllis Reynolds Naylor. This event is significant as it adds to the character development of Judd Travers and provides context for Marty's feelings and actions towards him throughout the story. It's an example of how Marty's sense of justice and fairness is challenged by the actions of the adults around him.