According to the PMBOK® Guide, Project Integration Management includes the processes and activities to identify, define, combine, unify, and coordinate the various processes and project management activities within the Project Management Process Groups. It is the " glue " that holds the project together.
The processes included in the Project Integration Management Knowledge Area are:
Develop Project Charter: Formally authorizes the existence of a project.
Develop Project Management Plan: Defines, prepares, and coordinates all plan components.
Direct and Manage Project Work: Leading and performing the work defined in the project management plan.
Manage Project Knowledge: Using existing knowledge and creating new knowledge to achieve objectives.
Monitor and Control Project Work: Tracking, reviewing, and reporting overall progress.
Perform Integrated Change Control: Reviewing all change requests and managing changes to deliverables and assets.
Close Project or Phase: Finalizing all activities for the project, phase, or contract.
Analysis of the choices:
Choice A is incorrect because Collect Requirements and Create WBS belong to the Project Scope Management Knowledge Area.
Choice B is incorrect because Control Scope belongs to Project Scope Management and Develop Schedule belongs to Project Schedule Management.
Choice C is incorrect because Define Scope belongs to Project Scope Management and Estimate Costs belongs to Project Cost Management.
Choice D is correct because all three listed processes—Develop Project Charter (Initiating), Direct and Manage Project Execution (Executing), and Close Project or Phase (Closing)—are core components of Project Integration Management.
