New PMP Question & Answers with explanation

A project manager is performing activities associated with the Plan Procurement Management process. He is attempting to determine, along with the relevant subjectmatter experts, whether it makes more sense to develop internally or purchase a deliverable. What tools or methods can he use to produce a successful outcome?
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You use a predictive approach to managing projects and have just completed your cost baseline. Next, you begin working on determining funding requirements. Which of the following is true?
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Which of the following best describes overall project risk?
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Alyssa is a project manager tasked with managing an infrastructure project that will consolidate five data centers into one. She is currently facilitating the estimating process to calculate the duration of the project’s activities. Alyssa knows that she has reliable information and is therefore planning on using an estimating technique that will yield a highly accurate estimate with minimal effort expended. What estimating technique is she planning on using?
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Roshoud is the VP of customer operations for Galactic Kidz and project sponsor of the latest project, called Project G. He sits down with Sally, the project manager, to discuss the current budget estimate. Roshoud expresses his concerns to Sally over the budget being far greater than originally anticipated and asks her to course-correct. What produces the greatest expense on most projects?
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