Which phase of a project includes the completion of required work activities based on earlier plans?

The correct choice for this question is the project execution phase. This phase is where all the planned work activities are carried out to achieve the project's objectives. During execution, the team mobilizes resources, performs tasks, and monitors progress according to the plans established during the project planning phase. It involves coordinating people and resources and ensuring that the project stays on track.

While the project initiation phase lays the groundwork by defining the project's purpose and obtaining necessary approvals, and the project planning phase focuses on developing detailed plans and schedules, it is during the project execution phase that actual work takes place. The project closing phase, on the other hand, involves finalizing all activities, completing deliverables, and formally closing the project, rather than executing tasks based on plans.