A global firm invested significantly in a new project management training program for its mid-level managers. Post-training surveys show high satisfaction (Kirkpatrick's Level 1) and assessments confirm knowledge acquisition (Level 2). To justify the program's continuation to executive leadership, which of the following actions provides the most strategic and impactful evaluation?
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A
Calculating the total cost per participant and comparing it to industry benchmarks.
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B
Re-assessing knowledge retention with a follow-up exam in six months.
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C
Observing managers in project meetings to document their use of the new methodology.
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D
Analyzing on-time project completion rates and budget adherence for trained vs. untrained managers.