A RACI chart is a matrix that defines the roles and responsibilities of different stakeholders in relation to the IT risk management process. RACI stands for Responsible, Accountable, Consulted, and Informed. A RACI chart would be most helpful when communicating roles associated with the IT risk management process, as it clarifies who is responsible for performing the tasks, who is accountable for the outcomes, who is consulted for input and feedback, and who is informed of the progress and results. A RACI chart can help to avoid confusion, duplication, and conflict among the stakeholders, and to ensure that the IT risk management process is executed effectively and efficiently. A skills matrix, job descriptions, and an organizational chart are not as helpful as a RACI chart, as they do not specify the roles and responsibilities of the stakeholders in relation to the IT risk management process, and may not reflect the actual involvement and contribution of the stakeholders. References = CRISC Review Manual, 6th Edition, ISACA, 2015, page 35.