Which parts of a project plan are interdependent during the planning phase?

• A. Schedule, Scope, and Budget
• B. Risk Register, Issue Log, and Change Log
• C. Quality Plan, Communications Plan, and Procurement Plan
• D. Stakeholder Register, Project Charter, and Baseline

Answer: (A)

In planning, the schedule, the scope, and the budget form a tightly linked trio because they define what will be delivered, when it will be delivered, and at what cost. The scope outlines the work to be done; the schedule lays out when tasks and milestones will occur; the budget covers the resources and funds needed to complete that work. If you change the scope, you usually need more or fewer days and more or less money, so the schedule and budget must adapt. If you shorten the schedule, you may need extra resources or higher costs to keep the same scope. If the budget is tightened, you might have to reduce the scope or extend the timeline to stay within limits. This interdependence is why, during planning, these three elements are continually adjusted against each other to establish a feasible plan.

The other groups are important in their own right for guiding and controlling the project, but they don’t form the same core interdependency as the schedule, scope, and budget.