When a salesperson implies that a customer is intelligent without providing clear information, which appeal is being used?

The correct answer is that the appeal being used is the Appeal to Flattery. This technique involves complimenting or praising someone—in this case, the customer is implied to be intelligent in order to build rapport and persuade them to make a purchase. Flattery aims to make the customer feel good about themselves, which can lead to a greater willingness to comply with the salesperson's suggestions.

In this context, appealing to someone's intelligence serves to create a favorable impression and can influence their decision-making. The absence of clear information in this appeal suggests that the salesperson is relying on flattery rather than substantiating the product’s value with factual evidence, which is a characteristic feature of this type of appeal. The objective is to enhance the customer’s perception of their own qualities to facilitate a transaction.