A project team is struggling with unclear roles and responsibilities, leading to duplicated work and missed tasks. Which document should the project manager create or update to resolve this issue?
A RACI-format responsibility assignment matrix maps each task to who is Responsible, Accountable, Consulted and Informed, removing ambiguity about ownership. This directly resolves the duplicated work and missed tasks caused by unclear roles and responsibilities across the project team.
Why this answer
The Responsibility Assignment Matrix (RAM), particularly in RACI format, is the correct document to resolve unclear roles and responsibilities because it explicitly maps project tasks to team members, defining who is Responsible, Accountable, Consulted, and Informed. This eliminates ambiguity, prevents duplicated work, and ensures no tasks are missed by providing a clear, traceable assignment of duties.
Exam trap
PMI often tests the distinction between the WBS (what work is done) and the RAM (who does the work), leading candidates to incorrectly choose the WBS when the question specifically asks about roles and responsibilities.
How to eliminate wrong answers
Option A is wrong because the Work Breakdown Structure (WBS) decomposes project deliverables into smaller, manageable components but does not assign roles or responsibilities to individuals or teams. Option B is wrong because the Organizational Breakdown Structure (OBS) shows the hierarchical reporting structure of the organization, not the assignment of specific tasks to specific people. Option D is wrong because the Risk Register documents identified risks, their probability, impact, and response plans, but it does not address role clarity or task ownership.