Which of the following is not a reason for forming a customer association?

The answer would be: "Making profit for consumers." Explanation: A customer association is typically formed to protect consumers' interests and improve the quality of goods or services provided to them. It allows consumers to come together and have a stronger voice when dealing with businesses or government entities. The other options listed - protection against poor quality goods, protection against unscrupulous salesmen, improving the quality of goods to consumers, and improving the quality of services to shoppers - are all valid reasons for forming a customer association. However, making a profit for consumers is not typically a primary objective for such associations.