New PMP Question & Answers with explanation

A first-time project manager was assigned to a project that had a duration of three months. In order to get a head start on the project, the manager took an older, completed the project and incorporated all the tools, techniques, and checklists in their entirety from that project into the current one. The older project was completed in 14 months’ time and was remarkably similar in nature. The most appropriate comment on this would be:
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Lucy is managing a complex design-and-build project. Stakeholder involvement and influence have been significant since the project’s inception. Under such circumstances, the Monitor Stakeholder Engagement process should be:
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The product design your project team developed was extremely well received by the customer. There were two key contributors to this design. The customer calls you to tell you how pleased he is with the design. What do you tell him?
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Sarah is about to start developing her project stakeholder engagement plan. She is currently gathering all the required inputs for this process. She has already created the stakeholder register and has gotten access to the organizational process assets and enterprise environmental factors. Which of the following inputs is also critical for the process?
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Kate’s project is in execution. During an internal project review meeting, Kate learns that the stakeholder engagement plan needs an update. The last update was done two weeks earlier. According to the stakeholder engagement plan, the plan must be reviewed and updated on a monthly basis. The nature of the required update does not require following the formal change control process. What should Kate do?
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