New PMP Question & Answers with explanation

It is extremely important for a project manager to determine and map key stakeholder engagement levels early in the project. Which of the following statements support this claim:
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To develop a project stakeholder engagement plan, seek knowledge from groups or individuals with specialized training or subject matter insight into the relationships within the organization. In PMBOK jargon, what is this technique called?
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How can a project manager ensure continued active support of the project supporters and at the same time minimize negative impacts from the negative stakeholders?
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An organization’s value chain can be represented by a special type of flowchart called SIPOC. SIPOC stands for:
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Henry is the project manager for a process improvement project. Henry is a recently hired Six Sigma expert. David is the process owner of the process Henry must optimize. During the project kick-start meeting with the project sponsor, David said he supports all continuous improvement efforts. However, David is unaware of the Six Sigma technique and feels threatened by the newly hired expert, and as a result, is blocking Henry’s ideas. What is David’s current engagement level with the project?
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