New PMP Question & Answers with explanation

Your project sponsor has asked you for a forecast of the likely cost to complete the work of the project. Which of the following statements is true?
Select one
Quincy and Michael are two executives of Widgets for Life, a company providing the latest cool lifestyle gadgets. They have recently selected the next big project and have assigned you as the project manager. This activity is associated with what process group?
Select one
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 and document roles and responsibilities. What Knowledge Area are they engaged in?
Select one
A project manager has just facilitated the project change control process, which yielded 10 approved change requests. What process is he likely to perform next?
Select one
All of the following are true regarding project life cycles except for which one?
Select one