What three things are used to identify an item?

The correct answer highlights three essential elements used to identify an item in material management: the reference number, stock number, and item description.

The reference number serves as a unique identifier that can link to specific documentation or internal records, providing needed context about the item. The stock number is critical in inventory management as it provides a standardized way to classify and retrieve items across different systems and warehouses. Finally, the item description is crucial as it provides clarity about the item's characteristics, usage, and features, making it easier for personnel to recognize and differentiate between items.

Together, these three elements ensure precise identification, which is vital for effective inventory control, stock management, and procurement processes. By relying on a comprehensive approach that includes these specific types of information, organizations can maintain accurate records and improve overall operational efficiency.