Which action will enable flow in a process?

Eliminating sources of waste directly contributes to enabling flow in a process. In the context of Six Sigma, "waste" refers to any activities or resources that do not add value to the final product or service. When waste is identified and removed, whether it's excess inventory, unnecessary steps in a process, or waiting times, the overall efficiency of the process improves. This leads to smoother transitions, reduced cycle times, and the ability to accommodate customer demands more effectively.

By focusing on waste elimination, organizations can streamline their processes, allowing work to progress without unnecessary interruptions or delays, thus enhancing the flow. In comparison, simply supervising people, implementing a new inventory management system, or reducing the number of suppliers may not address underlying inefficiencies and might still preserve or even introduce additional waste in different forms.