The correct answer is "personalization." Personalization refers to the practice of tailoring products, services, or interactions to the individual needs and preferences of customers. In the given examples, writing special notes, remembering birthdays, and interacting with customers are all ways to personalize the experience for customers, making them feel valued and enhancing their satisfaction. To arrive at this answer, you can examine the different options listed and identify which one best captures the idea of customizing or personalizing interactions with customers.
