The correct answer is C - The team should discuss their definition of done (DoD) and make changes to ensure there is common understanding of the acceptance criteria.
A shared understanding of what "done" means ensures consistent quality across team members. When this understanding is missing, defects and inconsistencies arise. The Definition of Done (DoD) should be reviewed and updated collaboratively to set a clear standard for completeness and quality.
From the PMI Agile Practice Guide:
"The Definition of Done provides a shared understanding of when work is complete. This includes quality criteria, testing, and documentation. It should be revisited regularly to maintain alignment." (PMI Agile Practice Guide, Section 5.2 - Definition of Done) Mike Griffiths emphasizes:
"Quality issues often result from unclear or inconsistent DoD. Revisiting and refining it ensures consistent expectations across the team." (Mike Griffiths, PMI-ACP Exam Prep Book, Chapter 5 - Adaptive Planning) Why the other options are incorrect:
* A (TDD) may help, but won't solve the fundamental alignment issue.
* B accepts a problem without resolving it.
* D imposes a process without team collaboration, which is not agile.