Final answer:
For a customer management database, Customer Registration is essential, forming the basis for tracking interactions and ensuring customer data is organized for better service and satisfaction.
Step-by-step explanation:
In a database that manages customers, the most useful Quick Start application part would likely be B) Customer Registration. This component is vital to a customer management system as it allows for the collection and organization of customer information which forms the foundation of customer relationship management (CRM). With an effective customer registration system in place, a business can track customer interactions, streamline communication, and ensure that relevant customer data is easily accessible. This supports targeted marketing, personalized service, and better overall customer satisfaction.
By contrast, while User Authentication, Order Management, and Product Catalog are all important to a commercial database system, Customer Registration is fundamental for initially capturing customer details which can then be used across other facets like securing user accounts, processing orders, and linking customer profiles with their browsing and purchasing history.