Which one of the following would be the MOST useful in helping to define roles and responsibilities in an organizational structure?

RACI stands for Responsible, Accountable, Consulted, and Informed, providing a clear matrix that maps activities or decisions to the people or roles involved. It eliminates ambiguity by explicitly stating who performs the work, who owns the outcome, who provides input, and who must be kept informed. This makes it the most directly useful tool for defining and documenting organizational roles and responsibilities.

An incident model is a predefined set of steps for handling a specific type of incident, not a tool for defining organizational roles and responsibilities.

The CSI approach guides continual improvement of services and processes through a seven-step method, not the assignment of organizational roles.

The Deming Cycle (Plan-Do-Check-Act) is a quality improvement methodology, not a framework for defining roles and responsibilities.