Final answer:
The cross-functional business process out of the given options is fulfilling a customer order.
Step-by-step explanation:
A cross-functional business process refers to a process that involves multiple departments or functions within a business working together towards a common goal. Out of the given options, fulfilling a customer order is a cross-functional business process.
When fulfilling a customer order, different departments such as sales, inventory management, production, and shipping collaborate to ensure the order is processed, packaged, and delivered accurately and on time.
On the other hand, hiring an employee, identifying a customer, and creating an invoice are not necessarily cross-functional processes as they can typically be handled by one specific department or function within a business.