Which of the following tools is a project management technique designed to determine communication protocols...

RACI is the project management tool used to define communication expectations and involvement levels for key personnel during decisions and project execution. RACI stands for Responsible, Accountable, Consulted, and Informed. It helps clarify who performs the work, who owns the outcome, who must be consulted before decisions are finalized, and who needs to be kept informed. In cross-functional Six Sigma projects, this is essential because unclear roles often lead to delays, duplicated effort, poor communication, or decision conflicts. By making involvement explicit, the RACI model improves governance, accountability, and stakeholder coordination. A toll-gate is a phase review checkpoint, not a communication-role mapping tool. An activity network diagram focuses on sequencing tasks and dependencies. A project charter review confirms project alignment and readiness but does not assign decision-role relationships in the same structured way. In Black Belt project leadership, RACI is especially useful when many departments or leaders are involved and the team must define participation boundaries clearly. Therefore, the correct answer is RACI, because it directly establishes communication protocol and level of involvement for key personnel.

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