At a business meeting among the heads of several top brokerages in town, the keynote speaker discussed a minimum listing fee. What is this an example of?

Group boycotting refers to a situation where businesses or individuals agree to not conduct business with a certain company or individual to exert pressure. In this case, the brokers are not refusing to do business with each other but are instead discussing a common pricing strategy, which does not fit the definition of group boycotting.

Market allocation occurs when competing firms agree to divide markets among themselves, agreeing not to compete in certain geographic areas or for specific customers. The scenario presented does not involve dividing markets but rather setting a common pricing structure, which makes market allocation an incorrect choice.

A tie-in arrangement involves a seller requiring buyers to purchase a second product when they buy a primary product. The discussion of a minimum listing fee is unrelated to the sale of additional products or services, making this option irrelevant to the context of the meeting.