New PMP Question & Answers with explanation

Which of the following best describes an Agile life cycle?
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A project manager is performing closing activities and is getting ready to release project resources. What document can they reference for guidance on how resources are to be released?
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You are a project manager for Community Trends, a nonprofit organization. Your project has come about because of a social need. You’re calculating performance measurements and using actual costs to date, and you assume that ETC work will be completed at the budgeted rate. You know the following information: BAC = 900, ETC = 65, PV = 500, EV = 475, and AC = 425. Which of the following is the correct expected total cost at completion, given this situation?
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A project has the highest probability of completing successfully at which stage of the project?
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Direct and Manage Project Work, Manage Quality, and Conduct Procurements are processes belonging to what project management process group?
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