Final answer:
One guardrail on Lean budget spend is the prioritization of resources, which ensures resources are allocated effectively in alignment with an organization's strategic goals, preventing waste.
Step-by-step explanation:
One guardrail on Lean budget spend is C) Prioritization of resources. This means that resources are allocated based on their ability to provide the most value to the organization.
By prioritizing where the budget is spent, a company can focus on workflows, projects, or initiatives that align with its strategic goals and minimize waste. This approach prevents uncontrolled spending and ensures that investments in innovation are made judiciously, contributing to overall efficiency and effectiveness within the organization. Guardrails on budget spending are crucial for maintaining financial discipline in a Lean environment.