New PMP Question & Answers with explanation

All of the following statements are true regarding the Manage Project Knowledge process except for which one?
Select one
You are a project manager for an engineering company. Your company won the bid to add ramp-metering lights to several on-ramps along a stretch of highway at the south end of the city. You subcontracted a portion of the project to another company. The subcontractor’s work involves digging the holes and setting the lamp poles in concrete. You’ve discovered the subcontractor’s work is not correct because the poles are not buried to the correct depth. You review the work and note gaps in the process and a lack of safety standards as a result of this error. Which of the following is true?
Select one
You are a project manager for SubZero Delights, a company that offers extraordinary experiences to travelers. Your latest project involves the development of a smartphone app that automatically picks up a customer’s GPS coordinates to provide tailored resources and recommendations. While documenting the resource management plan, you decide to incorporate a RACI. What does RACI stand for?
Select four
You are a project manager for an engineering company. Your company won the bid to add ramp-metering lights to several on-ramps along a stretch of highway at the south end of the city. You subcontracted a portion of the project to another company. The subcontractor’s work involves digging the holes and setting the lamp poles in concrete. You discover the end product does not meet safety standards, corrective action is needed to fix the problems and get the project back on track, and applicable standards were not followed. Which of the following is true?
Select one
You are the project manager for a project that will produce a mobile phone application that sends alerts when the UV rays are at dangerous levels, alerting users to stay indoors. You are in the process of acquiring resources to staff the project and obtaining responses from bidders on work that is being outsourced. These activities are associated with what process group?
Select one