Which tool should be used to closely monitor inputs and outputs?

ASIPOC diagram(Suppliers, Inputs, Process, Outputs, Customers) is specifically designed to closely monitor and understand the flow of inputs and outputs within a process. In data-driven decision making and quality management, SIPOC diagrams provide a high-level view of how value is created and delivered.

By clearly identifying suppliers and inputs at the start of a process and outputs and customers at the end, organizations can assess whether inputs meet requirements and whether outputs align with customer expectations. This visibility helps identify inefficiencies, gaps, or quality issues early in the process lifecycle.

Business process diagrams focus on workflow steps but do not emphasize supplier–input and output–customer relationships. Financial statements and pro forma statements are financial planning tools and are not designed for operational process monitoring.

Therefore, the correct answer isC, SIPOC diagram.