Which of the following best demonstrates use of the Plan-Do-Check-Act performance improvement model?

The correct answer is A because it aligns closely with the steps in the Plan-Do-Check-Act (PDCA) performance improvement model. In this option, the process begins with collecting baseline data, which corresponds to the planning phase of PDCA. Forming a committee to develop the plan is part of the doing phase. Validating audit data fits into the checking phase where the results are assessed. Finally, formalizing the change represents the acting phase of PDCA, where the change is implemented formally.

Options B, C, and D have elements that are not fully aligned with the PDCA model. For example, option B does not clearly outline a step for checking the effectiveness of the change, option C misses a formal check step between pilot testing and full implementation, and option D lacks a distinct step for acting on the plan developed.