No, The given statement is not true. It is a False Statement.
A Work Breakdown Structure must not be decomposed at least four levels in order to be effective.
Explanation:
A work breakdown structure is shortly called as WBS. It is usually used in project management and system engineering.
Work breakdown structure is simply the breakdown of the project into smaller components.
The goal of each component is achieved to achieve to overall goal of the project.
This framework helps in controlling the overall project, estimating the cost of the project, and completing the project on time, i-e, the schedule of the project.
WBS's effectiveness does not depend upon in how many levels the project is decomposed. It depends upon how effectively the decomposed components are executed and the goal is achieved.
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