New PMP Question & Answers with explanation

In which of the following situations would it be better to avoid using Analogous Estimating?
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To define the logical relationship among dependencies accurately, a project manager is determining which ones require a lead or a lag. Which of the following correctly describes leads or lags?
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Progressive elaboration is least applicable to which of the following processes?
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The project management team expects that during the course of the project there could be delays in component delivery due to strikes, changes to the permitting processes, or extensions of specific engineering durations. What analysis could be helpful in preparing contingency and response plans to mitigate these issues?
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Ron is a project manager handling an alternate water-supply project. During a project performance review, he notices the following: (i) Activity A, on the critical path, is delayed by four days. (ii) Activity B, not on the critical path, is delayed by nine days. (iii) Activity C, on the critical path, is delayed by two days. (iv) Activity D, not on the critical path, is delayed by five days. In what sequence should Ron prioritize his efforts in addressing these delays?
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