New PMP Question & Answers with explanation

At what point in the project life cycle do costs peak?
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You are the project manager for Xylophone Phonics, which produces children’s software programs that teach basic reading and math skills. You are performing the Plan Quality Management process and are considering the trade-offs between cost and quality. You know that it is cheaper and more efficient to prevent defects in the first place than to spend time and money fixing them later. Which of the following does this describe?
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You are a project manager reporting to the director of operations. You navigate to the department’s PMO intranet set to download the latest project charter template. What type of PMO is this?
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Your project is dependent on a precise manufacturing process. You have hired trained auditors to evaluate the process and identify ineffective activities. The auditors bring a few ineffective activities to your attention, and as a result, you take a corrective action. All of the following are true regarding this situation except for which one?
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Which of the following statements are true regarding power types?
Select three