Free PMP Exam Sample Question

The following PMP® exam sample question is taken from the Free PMP Exam Simulator at http://free.pm-exam-simulator.com - The answer is at the very bottom:

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You are managing a water supply network deployment project. During project planning you are considering two approaches to lay the pipe network. Approach A will most likely cost $50,000 (±5%). Approach B will most likely cost $25,000 (±40%). Which approach will you select if your project stakeholders' risk tolerances are low and if you want to select the less risky approach?

A.) Neither approach since they are not definitive estimates.
B.) Approach B since it ranges from $15,000 to $35,000.
C.) Approach A since it ranges from $47,500 to $52,500.
D.) A combination of approach A and B.

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Hint: Estimates are never definitive.
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ANSWER AND EXPLANATION:
The correct answer is C
Explanation: Please note that the question doesn't ask for the approach that is more financially feasible. Instead, the question asks you to identify the approach that has the lower risk. The larger the range of an estimate, the larger the risk. Since approach B is a wide range estimate, it is more risky. Approach C has a narrow estimate, which makes this approach less risky.
Reference: PMBOK Guide 4th Edition, page 284