New PMP Question & Answers with explanation

Vendor selection, vendor management, and documentation of lessons learned are tasks that fall under this process:
Select one
While applying the logical relationships to the project activities, a project manager must be careful not to:
Select one
While rating a proposal, one of the requirements was: "The proposed project manager needs to be a certified Project Management Professional, PMP®" This is an example of:
Select one
The Make-or-Buy analysis is a technique used as part of the Plan Procurement Management process. It can determine whether the project team can produce a particular product or service, or if it should be purchased. The analysis to arrive at a decision should include:
Select one
Which of the following may help in ensuring that certain bidders in the procurement process do not receive preferential treatment and that all prospective sellers have a clear and common understanding of the procurement?
Select one