PMI Scheduling Professional Certification (PMI-SP) 2025 – 400 Free Practice Questions to Pass the Exam

The 100 percent rule in project management specifically states that all work at higher Work Breakdown Structure (WBS) levels must equal the sum of the work at the lower WBS levels. This principle ensures that the project is completely accounted for and that there is a clear understanding of the relationship between the deliverables and the tasks involved in producing them. By adhering to this rule, project managers can better track progress and ensure that all components of the project are being addressed comprehensively.

This concept is particularly important in the WBS methodology, where breaking down tasks into smaller components allows for more precise estimation, planning, and resource allocation. It leads to a more organized project structure and helps prevent omissions of work that might lead to project delays or scope creep.

Thus, option B embodies the essence of the 100 percent rule as it emphasizes the critical nature of comprehensive task accounting in project management, facilitating effective tracking and management of project progress.