Final answer:
Jerry's claim that the contract is void is incorrect because the contract is valid and enforceable.
Step-by-step explanation:
Jerry's claim that the contract is void is incorrect. The contract between Jerry and Ben is a valid contract that includes a clause allowing Jerry to repurchase the land for a specific price.
A contract is generally considered void if it lacks essential elements or is against the law. In this case, the contract includes an offer (Jerry selling his land to Ben for $80,000), acceptance (Ben agreeing to purchase the land), consideration (the $80,000 payment), and a legal purpose (the sale of land). The repurchase clause also adds another element to the contract. Therefore, the contract is enforceable.