What should the agile coach ensure that developers do?

To ensure high code quality, especially for critical products, agile teams employ technical practices like pair programming and peer code reviews. The PMI Agile Practice Guide (Section 5.5: Technical Practices and Quality) and Mike Griffiths’ PMI-ACP Exam Prep Book (Chapter 5: Quality and Technical Excellence) support these practices as part of built-in quality—ensuring that issues are caught early in the development cycle.

Option A is correct: pair programming and peer reviews increase code quality and reduce defects early.

Option B is essential but a feedback tool—not a direct quality assurance practice.

Option C implies waterfall-style handoffs.

Option D is inefficient and risky without integrated testing or validation.