Answer:
A. continuous improvement.
Explanation:
PDCA (plan–do–check–act or plan–do–check–adjust) is a four-step method used for control and also continuous improvement of processes and products. Also known as the Deming circle or wheel. , the Shewhart cycle, the control circle/cycle, or plan–do–study–act (PDSA). Another version of this PDCA cycle is OPDCA. This means observation-plan-do-check-act.