According to the PMBOK® Guide, specifically within the Project Integration Management knowledge area, Perform Integrated Change Control is the critical process of reviewing all change requests; approving changes and managing changes to deliverables, organizational process assets, project documents, and the project management plan; and communicating their disposition.
Reviewing, approving, and managing (Option A): This is the verbatim definition provided by PMI. This process is conducted from project inception through completion and is the ultimate responsibility of the project manager, though a Change Control Board (CCB) often handles formal approval for baseline changes. It ensures that only documented and approved changes are implemented.
Facilitating change management (Option B): While manuals and automation tools (like a Configuration Management System) are used within the process, they do not define the process itself. They are part of the " Tools and Techniques " (specifically Project Management Information Systems).
Comparing actual with planned results (Option C): This describes the Monitor and Control Project Work process. While performance data may trigger a change request, the act of comparison is a monitoring function, not the change control function.
Documenting changes by the CCB (Option D): This is too narrow. While the CCB plays a major role and documentation is required, the process is much broader, encompassing the entire lifecycle of a change from the initial request through implementation and communication.
In the PMI framework, Perform Integrated Change Control ensures that the project remains aligned with its objectives by ensuring every change is assessed for its impact on all project constraints (Scope, Schedule, Cost, Quality, Risk, and Resources).
