New PMP Question & Answers with explanation

Your boss is giving you a rough outline of the scope, constraints, and risks involved in a prospective client's project. The project is highly similar to another project you are currently closing. The sponsor wants to know how long this project would take your team to complete. You think your team may need two months, but what should your answer be?
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You are managing the development of a new blood pressure cuff for a customer who provided you with the objectives and description of the cuff. You and your team are decomposing the customer's high-level requirements to the level of detail needed to design the blood pressure cuff and therefore define the scope of the product. In what activity are you involved?
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Scope verification is different than quality assurance is that:
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You are in the Validate Scope process of your electronic goods manufacturing project. While reviewing some products, you have noticed that the tolerance for one product is 0.01 percent less than what was listed in the requirements documentation. This deviation may not be a problem for the customers, and it may not impair the product’s operation. What is your best immediate action in such a situation?
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Nancy can bid on two projects. Project A has a 50 percent return on investment while Project B has a 20 percent return on investment. Project A’s scope of work is complex, and Nancy’s organization does not have the necessary skills and experience to do this project. However, Project B’s scope of work falls within the strengths of Nancy’s organization. Which project must Nancy bid on?
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