New PMP Question & Answers with explanation

Establishing control accounts for the work packages and a unique identifier from a code of accounts finalizes the WBS. This provides a structure for hierarchical summation of:
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George is managing a construction project and currently sequencing the project activities and defining their logical relationships. Two activities have both the SS and FF relationships. How should George schedule these activities?
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Many project managers have seen a graph that shows “Influence of Stakeholders” starting out high and declining as the project progresses. In contrast, it also shows the “Cost of Changes” starting out low and increasing as the project progresses. What is the key insight a project manager should gain from this graph?
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One key characteristic of adaptive lifecycles, such as the agile approach for product development, is that product features are developed using:
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Which of the following is not a tool and technique of the Collect Requirements process?
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