To ensurehigh code quality, especially for critical products, agile teams employtechnical practiceslikepair programmingandpeer code reviews. ThePMI Agile Practice Guide (Section 5.5: Technical Practices and Quality)andMike Griffiths' PMI-ACP Exam Prep Book (Chapter 5: Quality and Technical Excellence) support these practices as part ofbuilt-in quality-ensuring that issues are caught early in the development cycle. * Option Ais correct: pair programming and peer reviews increase code quality and reduce defects early. * Option Bis essential but a feedback tool-not a direct quality assurance practice. * Option Cimplies waterfall-style handoffs. * Option Dis inefficient and risky without integrated testing or validation.