hardMultiple ChoiceObjective-mapped

PK0-005 Practice Question: Refer to the exhibit

Exhibit

WBS
1.0 Project
    1.1 Initiation
        1.1.1 Develop Charter
        1.1.2 Identify Stakeholders
    1.2 Planning
        1.2.1 Create Scope Statement
        1.2.2 Develop Schedule
    1.3 Execution
        1.3.1 Build Product
        1.3.2 Test

Refer to the exhibit. Which WBS element is the highest level of decomposition shown?

⚠ Common exam trap

The trap here is that candidates often mistake the most detailed or lowest-level WBS element (like 1.1.1 or 1.3.1) as the 'highest' because they focus on the numbering depth rather than the hierarchical position, but the highest level is always the one with the fewest digits (e.g., 1.0).

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

1.0

In a Work Breakdown Structure (WBS), the highest level of decomposition is the top-level element that encompasses all deliverables. Option C (1.0) represents the entire project or major deliverable, which is the root of the hierarchy, while the other options are sub-elements at lower levels. This aligns with the PMBOK Guide's WBS principle that the highest level is the project itself or the first level of decomposition.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
1.2
Why it's wrong here
1.2 is a second-level element, higher than 1.1.1 but lower than 1.0.
✗
1.3.1
Why it's wrong here
1.3.1 is a third-level element.
✓
1.0
Why this is correct
1.0 is the top-level WBS element representing the entire project.
✗
1.1.1
Why it's wrong here
1.1.1 is a third-level element, not the highest.

Go deeper

PK0-005 Practice Question: Refer to the exhibit

Exhibit

Why each option matters

Option-by-option breakdown

Related to this question