The process of reviewing all change requests, approving changes, and managing changes to deliverables, organizational process assets, project documents and project management plan; and communicating their disposition, is known as:

Perform Integrated Change Control

Explanation:

Perform Integrated Change Control is the process of reviewing all change requests; approving changes and managing changes to deliverable, organizational process assets, project documents, and the project management plan; and communicating their disposition.

It reviews all requests for changes or modifications to project documents, deliverable, baselines, or the project management plan and approves or rejects the changes