Which type of customer is defined as someone who is not part of the organization?

The correct answer is B, external customer. An external customer is someone who is outside the organization and does not work for it. This group encompasses anyone who purchases or uses the company's products or services but has no direct ties to the organization, such as clients, consumers, or patrons.

Understanding the distinction between external and internal customers is crucial in retail. Internal customers are typically employees or divisions within the organization that rely on each other to fulfill their roles and operate effectively; they are part of the internal ecosystem. The concepts of new and repeat customers refer specifically to the customer's history with the business rather than their organizational association, which does not pertain to the question of whether the customer is part of the organization.