New PMP Question & Answers with explanation

Roshoud is the VP of customer operations for Galactic Kidz and project sponsor of the latest project, called Project G. He sits down with Sally, the project manager, to discuss and document roles and responsibilities. What Knowledge Area are they engaged in?
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A project manager has just facilitated the project change control process, which yielded 10 approved change requests. What process is he likely to perform next?
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All of the following are true regarding project life cycles except for which one?
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The project management plan might require changes and updates as the Planning processes proceed. These updates are decided upon and managed through which of the following?
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An Agile project team builds their schedule by pulling features from the backlog reflected on a task board as capacity to take on work becomes available. In some cases, a feature may take two weeks to complete, while in others, it takes more. What type of delivery method does this describe?
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