Final answer:
Examples of ways a seller can reassure a possible buyer facing imperfect information include guarantees, warranties, and service contracts, as well as unstated guarantees in the form of refunds or exchanges.
Step-by-step explanation:
When facing imperfect information, a seller can reassure a possible buyer through various ways. Some examples include providing guarantees, warranties, and service contracts. Additionally, sellers can offer unstated guarantees, such as refunding the cost of a ticket in the case of a dissatisfied customer at a movie theater, or allowing customers to exchange dishes or reduce the price of the bill at a restaurant if they are not satisfied.