Final answer:
A shipment ID is a unique identifier used to track and trace the movement of a shipment of goods in business.
Step-by-step explanation:
In business, a shipment ID is a unique identifier assigned to a specific shipment of goods. It is used to track and trace the movement of the shipment from the point of origin to its destination. The shipment ID is typically generated by the shipping company and can be used to monitor the status of the shipment, including its location and estimated delivery time.