What system delivers a product or service to a customer?

The operational value stream is the correct choice because it represents the sequence of activities that a company undertakes to deliver a product or service to its customers. This stream encompasses all steps that add value to the product from its original concept to its final delivery. It focuses on how products or services are produced and the flow of value to the customer, ultimately fulfilling customer needs.

In contrast, the development value stream concerns the processes involved in building a product, including design and development activities, but it does not itself deliver the product to the customer. The Kanban system is a method for managing work and optimizing flow within teams but does not specifically address the delivery of products or services to customers. The dual operating system is a concept that allows organizations to run both traditional hierarchies and more agile frameworks concurrently, but it is not a direct system for delivering products or services. Understanding these distinctions helps clarify why the operational value stream is the most relevant option regarding customer delivery.