New PMP Question & Answers with explanation

The project manager controls the interfacing and overlapping areas of the organization’s procurement processes, along with the project schedule, with processes from this area:
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The Executive VP of Finance has informed you that you will be the project manager for an energy audit the company is performing in order to save expenses. He has assigned you to identify the stakeholders and to start documenting the high-level assumptions and constraints. Your project is in what stage?
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During the weekly change control board meeting, you invited the facilities manager to speak about the change request to increase the BTUs of the air conditioning system in the new data center. This is an example of what type of tool and technique in the Perform Integrated Change Control process?
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A change request that is issued to bring the performance of the project back in line with the project management plan is related to:
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You are having your project team members record the time they spend on different activities during the day, such as programming, electrical, HVAC, etc. This is an example of a tool and technique in what process?
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