The maker of Protect Your Hands hand sanitizer decided to test its consumers' reactions to one of its new products, Protect Your Hands Sanitizing Wipes. It sent out flyers advertising several of the company's products along with the new product to select customers of the target market. The flyer also asked the customers to shop in a mock store filled with real products, including the new product. In this case, the maker of Protect Your Hands has used ________.
