The correct answer is D because organizational transformation to agile requires more than process changes- it requires a shift in mindset. Training teams on agile values and principles builds a shared foundation and helps foster commitment to agile ways of working.
From PMI Agile Practice Guide:
"Agile transformation requires attention to both practices and mindset. Leaders must help teams embrace agile values, empower decision-making, and promote an agile culture through education and active support." (PMI Agile Practice Guide, Section 2.1 - Organizational Change and Transformation) From PMBOK Guide - 7th Edition:
"Successful transformation begins with people understanding the why and how of agile. Change cannot happen effectively without adequate training and communication." (PMBOK Guide 7th Ed., Principle 1 - Be a Diligent, Respectful, and Caring Steward) From Mike Griffiths' PMI-ACP Exam Prep Book:
"Agile success is rooted in the team's understanding of core principles. Agile leaders must invest in developing a strong foundational mindset, as well as practices. Education is a critical enabler of sustainable agile adoption." (Mike Griffiths, Chapter 1 - Agile Principles and Mindset) Option A is a partial strategy but doesn't ensure cultural transformation.
Option B is necessary but not sufficient-buy-in alone won't change behavior.
Option C is tactical and useful but doesn't address team-wide mindset change.