In a SIPOC diagram, which element identifies the sources that supply the inputs used in the process?

• A. Inputs
• B. Suppliers
• C. Process
• D. Customers

Answer: (B)

In a SIPOC diagram, the element that identifies who provides the inputs is the Suppliers. This part of the map points to the entities—whether external vendors, internal departments, or partners—that supply the resources or information needed to start the process. Knowing the suppliers helps teams see where inputs come from, coordinate deliveries, and assess reliability and lead times for sourcing. This differs from the actual inputs themselves, which are the materials or information entering the process; from the process steps, which describe what is done; from the outputs, which are the products or services produced; and from the customers, who receive those outputs. By naming suppliers, you establish the link to the sources of inputs and can address potential supply risks.