New PMP Question & Answers with explanation

In a manufacturing project, you have requested bids to procure stainlesssteel products. However, your sponsor insists that you conduct bidder conferences before selecting sellers. What mandatory standard in the PMI Code of Ethics and Professional Conduct is met by conducting bidder conferences?
Select one
Organizations evaluate whether to buy products or make the items themselves. Which of the following is not a factor that influences makeor-buy decisions:
Select one
Your drug manufacturing project requires the synthesis of many pharmaceutical chemicals to produce an active ingredient for a drug. You are managing a contractor to supply all these chemicals. Recent quality testing of the drugs raised concerns over the quality of the chemicals supplied by the contractor. Which of the following must be your first action to ensure that the contractor is meeting all contractual obligations?
Select one
A program management office (PMO) chose you to write a purchase order because of your expertise in business writing. You learned the PMO has already selected a seller for a software product and would like to award the procurement contract to the selected seller as a purchase order, which you must prepare. In this scenario, the PMO is administering:
Select one
Many organizations favor fixed-price contracts because the buyer's risk is minimized by such contracts. However, to minimize the seller's risk, which of the following is crucial for a fixed price contract?
Select one