单项选择题 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 projects communication. According to Metcalfes Law, a project with 10 stakeholders has（）potential communication channels.

单项选择题 A （）is a collection of projects and other work that are grouped together to facilitate effective management ofthat work to meet strategic business objectives.

单项选择题 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.