New PMP Question & Answers with explanation

The lowest level of the work WBS is the:
Select one
To expedite the scheduling process, a project manager alters an existing schedule management plan from a previous project for use on the current project. In this case, the schedule management plan represents:
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Which contract type poses a higher risk for the buyer?
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Al is a lead testing manager, and Veronica is a development manager; both work for Power Cloud Stock Trading Online. They are requesting a meeting with the project manager because every milestone that has been set for the project seems to experience a conflict. The top three reasons for conflict are:
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Crystal is a family of methodologies intended to support a wide range of projects, depending on project size and criticality. Match the Crystal Method used when basing the selection solely on the range of stakeholders involved.
Matching
Crystal Methods
Crystal Method Name Number of Stakeholders Involved
Crystal Clear
20 to 40 people
Crystal Yellow
5 to 100 people
Crystal Orange
6 to 20 people
Crystal Red
1 to 4 people