Final answer:
Purchase order processing is an example of a business process.
Step-by-step explanation:
The correct answer is 1) Business process. Purchase order processing is an example of a business process. A purchase order is a document used by a buyer to request goods or services from a seller. The purchase order processing involves steps such as creating a purchase order, sending it to the supplier, receiving and verifying the invoice, and finally making the payment for the goods or services.