New PMP Question & Answers with explanation

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
A project manager became aware of a disagreement between two developers who have been paired together to write code. Which conflict-resolution technique should the project manager use to create a win-win situation?
Select one