are individuals and organizations that are actively involved in the project, or

are inpiduals and organizations that are actively involved in the project, or whose interests may be affected as a result of project execution or project completion; they may also exert influence over the project and its results.

A．Controls

B．Baselines

C．Project stakeholders

D．Project managers

C解析：项目干系人是积极参与到项目中，或其利益可能会受项目执行或完成结果影响的个人或组织：他们可能会对项目及其结果施加影响。