New PMP Question & Answers with explanation

A project manager prepared a presentation that included data on the project’s use of resources, improvements in staff efficiency, and the cost savings. These activities are part of what process?
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A senior project manager advises a first-time project manager that identifying risks is just one step. On a continuing basis, new risks need to be identified, and existing risks need to be analyzed and tracked, and their status reported. All this is done as part of what process?
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How can changes be made to a project management plan once the project manager baselines it?
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Due to a tight project schedule, a project manager did not document lessons learned throughout the project cycle. However, at the end of the project, he finally documented the lessons learned. Your comment on this is:
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One of the stakeholders of a project initiated a change request, which was then documented in the change control system. Who would typically be responsible for approving or rejecting the change request?
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