In the process of communication requirement analysis, the project manager should consider the number of potential communication channels or paths as an indicator of the complexity of a project's communication. According to Metcalfe's Law, a project with 10 stakeholders has（）potential communication channels.

Quality planning tools are often used to help plan effective quality management activities . （）is one of such tools, which involves company actual or planned project practices to those or other projects to generate ideas for improvement and to provide a basis by which to measure performance.

Project selection methods involve measuring value or attractiveness to the project owner or sponsor and may include other organizational decision criteria （）is not a project selection method.

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You are working on the cost budget for one project. Which of the following is true（）

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An example of scope verification is （）.

Contract closeout is a process that involves（）

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Changes may be requested by any stakeholder involved with the project, but changes can be authorized only by（）