Final answer:
To inform a customer about a sale on t-shirts, approach them in a friendly manner and mention the sale clearly, such as by noting that t-shirts are $9 each. Reassure buyers with imperfect information by offering detailed product information, a clear return policy, and showing customer reviews.
Step-by-step explanation:
When you notice a customer checking out the t-shirt display, it's important to inform them about any ongoing sales in a friendly and helpful manner. For instance, if the company Coolshirts is running a promotion where t-shirts are priced at $9, which is a discount from the regular price, this can be conveyed to the customer. A potential approach could be saying, "Good morning! I thought you might like to know that we're currently having a sale on our t-shirts. They are available for only $9 each today!" This way, the customer is informed of the current sale without feeling pressured to make a purchase.
A seller might also reassure a buyer who is faced with imperfect information by providing a clear return policy, showing customer reviews, or offering detailed product information to facilitate an informed decision. Such transparency conveys trustworthiness and may increase the customer's comfort level with the purchase.