The correct answer is A - Kaizen. Kaizen is a Japanese term meaning "continuous improvement." In Agile, Kaizen refers to the practice of regularly reflecting on processes and results, then making incremental improvements. By tracking impediments and resolving them transparently, the team engages in Kaizen behavior.
From the PMI Agile Practice Guide:
"Agile teams embrace a mindset of continuous improvement (Kaizen), regularly inspecting their work and processes and adapting them for better outcomes." (PMI Agile Practice Guide, Section 6.6 - Continuous Improvement) Mike Griffiths writes:
"Agile is rooted in lean thinking, including Kaizen. Teams reflect on what went well and what needs to change, often using tools like Kanban boards to visualize and track improvements." (Mike Griffiths, PMI-ACP Exam Prep, Chapter 7 - Continuous Improvement) Incorrect options:
* B refers to goal-setting, not process improvement.
* C are metrics, not an outcome of experimentation.
* D (Muda) refers to waste, which Kaizen seeks to reduce.