New PMP Question & Answers with explanation

Jared is in the execution phase of a residential housing construction project. He has been informed of major scope changes from stakeholders in the middle of the project. These changes involve regulatory requirements from local authorities that may affect not only the scope but also the cost and duration of the project. What is the first step that Jared should take in considering these changes?
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If you are working on a project with constantly changing scope, which type of contract would work best when hiring an outside vendor to complete a portion of the work?
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A seller organization was executing work for a project under a contract. During the course of the project, a number of disputes arose over the scope and quality of the work. Which of the following is the preferred method of resolving these claims?
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The scope of work in a project could not be clearly defined. There was also a strong possibility that the scope would change during the course of the project. Which type of contract would suit this type of situation?
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Erica is managing a kitchen tools manufacturing project, which is intended to produce modern cooking ovens. This project is hugely important for the company as well as for Erica‘s career. Although the project scope statement was well-defined and requirements were gathered from stakeholders in the planning phase, many design change requests have come in from customers during project execution. Which of the following tasks must Erica perform to avoid scope creep caused by uncontrollable changes?
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