Final answer:
Marty's parents believed that Judd decided to sell Shiloh to Marty because they assumed Judd needed money.
Step-by-step explanation:
Marty's parents believed that Judd had decided to sell Shiloh to Marty because they assumed Judd needed money (C). They may have observed financial difficulties or heard rumors that led them to this conclusion. It is important to note that this information is not provided in the provided reference.