Which tool is recommended to help identify customer responsibilities in one of their business processes?

The term "BMC chart" is not a standard, widely recognized project management or responsibility assignment tool.

A RACE report is primarily associated with marketing frameworks (Reach, Act, Convert, Engage) and does not serve as a tool for defining process responsibilities.

An Agile chart, such as a burn-down or burn-up chart, is used to track progress and workload in Agile development, not to define individual responsibilities within a business process.

A RACI chart explicitly defines who is Responsible, Accountable, Consulted, and Informed for each task or deliverable within a process. This framework is specifically designed to clarify individual or group responsibilities, making it ideal for identifying customer responsibilities when they are stakeholders in a business process.