New PMP Question & Answers with explanation

Sally and Joe are two project managers working in the corporate offices of a popular fast-food franchise. They are both studying for their PMP® certification and are having a discussion on the WBS. Sally is confused and asks Joe to describe what the WBS contains. What is Joe likely to respond with?
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You are sequencing activities and have just begun to identify dependencies. What can you use to help get you started quickly?
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Your project includes a new manufacturing technique that requires knowledge of chemical engineering to perform one of the services required in the project management plan. The service was performed, and as a result, an approved change request has been submitted. Which of the following statements is true?
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Nicolas is the project manager of a project that has been described as revolutionizing the mobile fitness tracking industry. He recently used his negotiation skills to achieve the support and agreement of two functional leads involved in his project. As part of his approach, he references the plan that outlines strategies and actions documented to manage specific stakeholders. What document did Nicolas reference to get this information?
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According to the PMBOK® Guide, this output of the Manage Stakeholder Engagement process is used to promote communication with stakeholders.
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