New PMP Question & Answers with explanation

You are the project manager for a cable service provider. Your team members are amiable with one another and are careful to make project decisions jointly. Which of the following statements is true?
Select one
During a recent team meeting, you reached a resolution to an issue that's been troubling the team for several weeks. It turned out that there was a problem with one of the manufactured parts required for the project. Once this was corrected, the remaining production run went off without a hitch. You took responsibility for searching out the facts of this problem and implemented a change request to resolve the issue. Which of the following is true regarding this question?
Select one
Your team is working on an agile project developing an app that alerts airline passengers to gate changes for their flights once they've checked in. They are having a difficult time understanding how the user stories work together toward the big picture. Which of the following should you do?
Select two
You are in the Executing process and observing and gathering information on project elements such as schedule status, deliverables completion, lessons learned, KPIs, technical performance measures, and resource utilization. Which of the following statements is true regarding this question?
Select one
Your team members and stakeholders are new to agile techniques. Which of the following are important steps you should take to ensure that they receive the training they need to be successful with this new methodology?
Select one