Final answer:
Princess Cruise Lines is applying the marketing concept by talking to customers to understand their preferences and tailor its offerings accordingly.
Step-by-step explanation:
Princess Cruise Lines is applying the marketing concept. The marketing concept is a business philosophy that focuses on understanding and meeting the needs and wants of customers. By talking to present and potential customers about their preferences, such as cruise destinations, group size, and amenities, Princess Cruise Lines can tailor its offerings to better serve its target market. This customer-centric approach allows the company to create value and build long-term relationships with its customers.