Which artifact breaks the project work into phases, deliverables, and work packages?

• A. Gantt Chart
• B. Project Schedule
• C. Work Breakdown Structure (WBS)
• D. WBS Dictionary

Answer: (C)

The Work Breakdown Structure organizes the project scope by creating a hierarchical split of the total work into phases or major deliverables, then into smaller deliverables and ultimately work packages. This decomposition makes it possible to estimate, assign, and control the work at a manageable level, since each work package is small enough to plan and track. In other words, the WBS provides the framework that outlines what needs to be delivered and the chunks of work required to achieve those deliveries.

Gantt charts are timeline visuals of tasks and their dependencies, not the way the work itself is broken down. A project schedule is the plan showing when tasks happen and their timing, which comes from the WBS but is not the breakdown itself. The WBS dictionary is a companion document that describes each element of the WBS in detail, but it doesn’t perform the actual decomposition into deliverables and work packages. Therefore, the artifact that breaks the project work into phases, deliverables, and work packages is the Work Breakdown Structure.