New PMP Question & Answers with explanation

PMBOK offers a number of tools and techniques for all the project management processes. These tools and techniques must be carefully applied in order to meet the objectives of any process. Which of the following is not a tool or technique of the Plan Stakeholder Engagement process?
Select one
Organizational process assets are fundamental inputs to most of the project management processes. However, only some of the process assets are relevant to any given process. Which of the following organizational process assets is the least important consideration during the Manage Stakeholder Engagement process?
Select one
At which stage in a project should the project manager begin to develop effective stakeholder engagement strategies throughout the project lifecycle?
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Which of the following is a set of technical guidelines that may be applied during the design of a product for the optimization of a specific aspect of the design?
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Nancy has recently become the project manager for a project already in execution. Nancy has learned the previous project manager did a good job so far and religiously followed the PMBOK guiding principles. However, some of the project communications don’t make sense to her. Which of the project artifacts should Nancy refer to in order to determine reasons for distribution of some reports?
Select one