Quick Answer
The answer is the Responsibility Assignment Matrix (RAM). This document is correct because it directly links project activities to team members, clearly defining who is responsible, accountable, consulted, and informed—often visualized through a RACI chart. On the Certified Associate in Project Management (CAPM) exam, this question tests your understanding of key project documents used during the Planning process group, specifically within Project Resource Management. A common trap is confusing the RAM with the project organizational chart, which only shows reporting structure, not task-level duties. Remember that a RAM is a grid that assigns work, while an org chart just shows hierarchy. For a quick memory tip, think of the acronym RAM as “Roles Assigned to Members”—whenever you see a question about clarifying who does what on a predictive project, the RAM is your answer.
This CAPM practice question tests your understanding of predictive plan-based methodologies. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
In a predictive project, the project manager wants to ensure that the project team understands their roles and responsibilities. Which document is used to define roles and responsibilities?
Responsibility assignment matrix (RAM)
RAM commonly shows roles and responsibilities.
Work breakdown structure (WBS)
Why wrong: WBS shows deliverables.
Resource breakdown structure (RBS)
Why wrong: RBS shows resource categories.
Organizational breakdown structure (OBS)
Why wrong: OBS shows organizational units.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Responsibility assignment matrix (RAM)
The Responsibility Assignment Matrix (RAM) is used to define roles and responsibilities. Option A is correct.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Responsibility assignment matrix (RAM)
Why this is correct
RAM commonly shows roles and responsibilities.
Related concept
Read the scenario before looking for a memorised answer.
Work breakdown structure (WBS)
Why it's wrong here
WBS shows deliverables.
Resource breakdown structure (RBS)
Why it's wrong here
RBS shows resource categories.
Organizational breakdown structure (OBS)
Why it's wrong here
OBS shows organizational units.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
WBS shows deliverables.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CAPM exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which CAPM exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Predictive Plan-Based Methodologies — study guide chapter
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FAQ
Predictive Plan-Based Methodologies — This question tests Predictive Plan-Based Methodologies — Read the scenario before looking for a memorised answer..
The correct answer is: Responsibility assignment matrix (RAM) — The Responsibility Assignment Matrix (RAM) is used to define roles and responsibilities. Option A is correct.
Identify which CAPM exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This CAPM practice question is part of Courseiva's free PMI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CAPM exam.
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