New PMP Question & Answers with explanation

You are a project manager for an engineering company. Your company won the bid to add ramp-metering lights to several onramps 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. The subcontractor's performance to date does not meet the contract requirements. Which of the following is not a valid option?
Select one
You have contracted with a vendor to perform your project. Your internal stakeholders seem to have a memory lapse on the project objectives. Your vendor has complained to you that your stakeholders are difficult to work with and their expectations are unreasonable. Your vendor has also missed some requirements, which you discovered when you examined one portion of the finished product. Which of the following are true regarding this question?
Select three
Which one of the following is the most preferred method of settling claims and disputes according to the PMBOK® Guide?
Select one
You are working on a project and discover that one of the business users responsible for testing the product never completed this activity. She has written an email requesting that one of your team members drop everything to assist her with a problem that could have been avoided if she had performed the test. This employee reports to a stakeholder, not to the project team. You estimate that the project might not be completed on time as a result of this missed activity. Which of the following options are true?
Select three
Which of the following processes is responsible for reporting and comparing actual project results against the project management plan, analyzing performance data to learn if action needs to be taken, monitoring for risks, and monitoring approved change requests, among other functions?
Select one