Answer: the doctrine of unconscionability
Step-by-step explanation:
The doctrine of unconscionability is a defense that is against enforcing a contract. From the question, we are informed that Orlin bought a refrigerator, on credit, from a salesman and the salesman want him to pay 10 times the worth of the refrigerator.
In this scenario, the contract is deemed to be unfair and also oppressive to Orlin, thus he a find it unconscionable and therefore he can refuse to enforce it. Therefore, if he wants to challenge the contract’s terms, the doctrine of unconscionability will be used.