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.

Agile empowers teams to be self-organizing and self-managing. According to the PMI Agile Practice Guide (Section 5.6) and Mike Griffiths ' PMI-ACP Exam Prep Book (Chapter 7: Problem Detection and Resolution), the agile coach or Scrum Master facilitates the process but should encourage the team to resolve internal issues themselves. This develops ownership, team maturity, and accountability.
The team coach's role is to support, not solve. Escalating issues unnecessarily or bypassing the team undermines agile principles. Therefore, Option C is correct: the coach should encourage the team to address and resolve the issue internally, stepping in only if the team cannot resolve it themselves.

The correct answer is C - Agile leader (e.g., Scrum Master). One of the key responsibilities of an agile leader is to protect the development team from external interruptions so that the team can maintain focus and maximize productivity.
From PMI Agile Practice Guide:
"The agile leader shields the team from outside disruptions to allow them to remain focused on their commitments. They work to establish working agreements, communication protocols, and help manage stakeholder access to the team." (PMI Agile Practice Guide, Section 6.1 - Responsibilities of the Agile Leader) From PMBOK Guide - 7th Edition (tailoring for agile environments):
"Leaders in agile environments facilitate communication, clear obstacles, and protect teams from disruptions and distractions that can compromise the team's ability to deliver value." From Mike Griffiths' PMI-ACP Exam Prep Book:
"Scrum Masters and agile leaders act as gatekeepers to the team, ensuring that stakeholder interactions are managed and that the team can focus on iteration goals." (Mike Griffiths, Chapter 4 - Team Performance) Option A (Product owner) is responsible for backlog clarity, not for shielding the team from distractions.
Option B (Project manager) is not a standard agile role; agile uses roles such as Scrum Master or Agile Coach.
Option D (Developers) may address distractions, but it is the agile leader ' s role to proactively prevent them.
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The project lead should focus on creating a safe environment where all team members feel comfortable expressing their opinions without fear of judgment or repercussions. This can be achieved by encouraging open communication, showing appreciation for diverse perspectives, and actively ensuring that everyone ' s voice is heard. A safe environment fosters trust and collaboration, which is essential for the team ' s success.
While other options may help in certain contexts, building a culture of safety and trust is the most effective long-term strategy to encourage team members to speak up.

To assess process efficiency, agile teams use value stream mapping to identify waste, delays, and non-value- adding steps. According to the PMI Agile Practice Guide (Section 5.5 Process Analysis and Value Stream Mapping), value stream analysis helps determine how efficiently a process converts inputs into valuable outputs, making it ideal for supporting customer inquiries on operational performance.
Mike Griffiths (PMI-ACP Exam Prep Book, Chapter 7: Continuous Improvement) reinforces the value of using value stream mapping for both software development processes and operational workflows to increase transparency and drive improvements.
* Option B is correct: reviewing the value stream provides a structured way to evaluate efficiency.
* Option A and D are important for team improvement and performance but don't focus on process activity efficiency.
* Option C relates to value prioritization, not operational efficiency.