Which document organizes tasks and subtasks for resource and cost planning?

• A. Schedule
• B. Project Charter
• C. Work Breakdown Structure
• D. Risk Register

Answer: (C)

The Work Breakdown Structure breaks the project scope into a hierarchical set of components, from major deliverables down to small, manageable work packages. This decomposition creates a clear map of all the tasks and subtasks, making it possible to assign resources to each piece and estimate costs at a level that aligns with how the work is carried out. Because each work package is defined in terms of deliverables and required work, you can sum up the resource needs and costs from the bottom up to get an accurate overall plan, and you can assign ownership and track progress against concrete components. In contrast, the schedule focuses on when things happen and the order of activities, the project charter sets the project’s purpose and authority at a high level, and the risk register captures identified risks and responses rather than structuring the work itself.