New PMP Question & Answers with explanation

Mike is a seasoned project manager who has been tasked with mentoring Bernard, a junior project manager. During a mentoring session, Mike stresses the importance of managing lines of communication and then asks Bernard how many stakeholders are engaged in his project. Bernard responds with 15. How many lines of communication must Bernard manage for his project?
Select one
Paul meets with his sponsor to review and obtain feedback on the project’s benefits management plan. He carefully reviews the list of benefits captured to date, who owns each benefit, and how they map to the company’s strategic objectives. What feedback is the sponsor likely to provide Paul about the plan?
Select one
Your project sponsor approaches you to let you know that he is considering awarding a senior engineer on your project with a spot bonus of $1,000 for her work. While the engineer has delivered against commitments, she created a lot of friction with others in the process and was constantly violating the agreement documented within the team charter. What should you do?
Select one
Which of the following are common sources of conflict?
Select three
Which of the following best defines backlog refinement?
Select one