New PMP Question & Answers with explanation

The day before manufacturing is to start, a project manager learns that the engineering design was not accepted by the end user. What should the project manager do?
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A team member is eager to add new features being considered by the customer to the project deliverable. Before beginning work on these new features, whose approval is required?
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A strategic project is about to begin user acceptance testing. Weekly progress meetings have been set up to prepare for testing with the business end users who have repeatedly raised questions and concerns. It is evident that there are critical business requirements that failed to be included in the business requirements analysis. What should the project manager do?
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A large project involving functional groups in four countries is nearing completion. The project manager is preparing closeout documents. Who should sign off on the acceptance of project deliverables?
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A project is initiated based on the approved scope. During implementation of the project design, a team member states that the product will not meet the requirements in a particular scenario. Fixing the issue will increase the scope and costs, and the project will miss the deadline. The project sponsors do not have additional funding to support the project. What should the project manager do?
Select one