- WBS (work breakdown structure)
- SOW (statement of work)
- Preliminary project scope statement
- Historical record of fact
The correct answer is 1.
The WBS is correct because the “WBS provides a deliverable-oriented decomposition of project work that defines the total scope of the project.” The preliminary project scope statement is not included in the A Guide to the Project Management Body of Knowledge—Fifth Edition (PMBOK® Guide) and the other two answers are distractors.
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