New PMP Question & Answers with explanation

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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Which of the following is an example of rolling wave planning in a project following an adaptive life cycle?
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Which of the following are short, textual descriptions of required functionality often developed during a requirements gathering workshop:
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