New PMP Question & Answers with explanation

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
Calculate the to-complete performance index (TCPI) based on the current EAC, using the following values: BAC = 15,000, AC = 12,000, EV = 10,000, EAC = 17,000.
Select one
You are a project manager for SubZero Delights, a company that offers extraordinary experiences to travelers. You have been working hard at developing your own personal leadership skills and have recruited a mentor to help you. During a mentoring session, you ask your mentor to talk about the characteristics that good leaders exhibit. What characteristics are they likely to call out?
Select three