Final answer:
A Universal Product Code (UPC) is a 9-digit number that identifies each item of supply in the business industry.
Step-by-step explanation:
In business, a 9-digit number that identifies each item of supply is called a Universal Product Code (UPC). The UPC is a barcode that is used to track and record product information, such as a product's manufacturer, item number, and price.
The UPC is widely used in the retail industry to streamline the checkout process and manage inventory. It allows for efficient and accurate identification of products, reducing the likelihood of errors and enabling companies to track sales and inventory levels.
For example, when a cashier scans the barcode on a product at a checkout counter, the UPC is used to retrieve the product's price and other relevant information from the store's database.