Final answer:
Sellers can reassure buyers with warranties, return policies, and detailed product information.
Step-by-step explanation:
When a seller of goods is faced with imperfect information, there are several ways to reassure a possible buyer. One way is through providing warranties or guarantees that offer protection if the product doesn't meet expectations. Another way is by offering a return or exchange policy, giving the buyer the option to return the product if they are unsatisfied. Additionally, the seller can provide detailed product information, such as specifications, reviews, and customer testimonials, to help the buyer make an informed decision.