Which of the following groups of people should be included in the communication plan for...

The correct answer is D. All stakeholders . The CSSBB source states that a Six Sigma project can affect many people both inside and outside the system, and that these stakeholders may include managers of the process, people in the process, finance, suppliers, and customers. It then explicitly says that a stakeholder communication plan should be developed to reduce or remove resistance to change.

Supporting material on communication strategies also emphasizes that the communication goal is to make sure the right people have the right information at the right time , and it shows different communication methods for executive stakeholders, project team members, and other stakeholders. This makes it clear that the communication plan should not be limited to belts, finance, or senior management alone. If the project is just starting, the plan should already account for everyone affected by or influential to the project . A complete stakeholder-based plan improves alignment, reduces resistance, and ensures that communication is targeted appropriately by power, interest, and role. Therefore, the verified CSSBB answer is D. All stakeholders .