New PMP Question & Answers with explanation

You have devised some proposal evaluation criteria based on past performance, contract compliance, and quality ratings to select a seller. Your organization has used two of the three vendors that bid on this project on previous projects, so you are comfortable using whichever one is selected. Which of the following is one of the most important criteria in evaluating the responses to your proposal?
Select one
Which of the following describes who is responsible for the quality assurance of the project?
Select one
Contract phases are closely related to the Project Procurement Management Knowledge Area processes. Which of the following are true?
Select three
Roshoud is serving as the project sponsor for a high-visibility project within the Galactic Kidz corporation. During a weekly executive status meeting, he expresses concern regarding quality assurance and requests an update. Quality assurance is most concerned with what?
Select one
Sally is a project manager who works at Galactic Kidz. While managing the execution of the project team’s work, she notices that two critical activities are delayed and decides to speak to the project sponsor. What action are Sally and the project sponsor likely to take?
Select one