Which practice involves persuading a customer to add complementary items to their original purchase?

The practice of persuading a customer to add complementary items to their original purchase is known as cross-selling. Cross-selling focuses on suggesting additional products that enhance or are related to the original item. For instance, if a customer is purchasing a camera, a salesperson might recommend a memory card or a camera case as complementary items.

This approach not only provides value to the customer by helping them enhance their original purchase but also increases the total sales for the retailer. It's an effective strategy that can boost customer satisfaction when done thoughtfully, as it meets the customer's broader needs by introducing relevant products.

In contrast, upselling involves persuading a customer to purchase a more expensive item or an upgrade, rather than adding additional items. Consumer education refers to informing customers about product features and benefits rather than directly encouraging additional purchases. Product bundling involves packaging several products together at a single price, which is a different strategy from the focused individual recommendations in cross-selling.