The correct answer is C - Risk-value quadrant. This technique is a prioritization matrix that helps teams identify and rank backlog items by evaluating their business value against their risk. This ensures early delivery of high-value and high-risk features, supporting fail-fast learning and reducing uncertainty.
From the PMI Agile Practice Guide:
"The risk-value matrix helps prioritize features by plotting them based on business value and implementation risk. High-value/high-risk items are often addressed first." (PMI Agile Practice Guide, Section 3.4 - Prioritization Techniques) Mike Griffiths emphasizes:
"The risk-value quadrant is a powerful tool to guide agile prioritization. It ensures the most valuable and uncertain items are tackled early to deliver insights quickly." (Mike Griffiths, PMI-ACP Exam Prep, Chapter 3 - Value-Driven Delivery) Incorrect options:
* A is used for estimation, not prioritization.
* B is a scheduling concept, not a prioritization method.
* D refers to story quality (Independent, Negotiable, Valuable, Estimable, Small, Testable), not prioritization.

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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Thedaily stand-up (daily Scrum)is atime-boxed coordination meetingwhere each team member answers the three key questions: What did I do yesterday? What will I do today? Are there any blockers? According to thePMI Agile Practice Guide (Section 5.3: Daily Stand-ups)andScrum Guide, in-depth discussions should betaken offlineto avoid disrupting the stand-up's purpose.
* Option Ais correct: deferring detailed conversations maintains stand-up focus.
* Option Bmay derail the time-boxed meeting.
* Option Coverreacts and undermines team self-management.
* Option Dmight be appropriate later but not during the stand-up.

The correct answer is B - Prioritizing stories.
The MoSCoW method is a prioritization technique used in Agile to categorize requirements and backlog items based on their business value. It helps stakeholders and teams agree on what is essential to deliver versus what is desirable or optional.
MoSCoW stands for:
* M - Must have
* S - Should have
* C - Could have
* W - Won't have (this time)
From the PMI Agile Practice Guide:
"The MoSCoW prioritization method helps stakeholders classify backlog items based on their criticality and desired delivery timing. This enables better alignment with business objectives." (PMI Agile Practice Guide, Section 5.2 - Prioritization) Mike Griffiths explains:
"MoSCoW is a simple but effective method for clarifying which features are essential and which can be deferred. It enhances transparency during prioritization discussions." (Mike Griffiths, PMI-ACP Exam Prep Book, Chapter 3 - Value-Driven Delivery) Why the other options are incorrect:
* A - Estimating story size involves techniques like planning poker or T-shirt sizing.
* C - Product validation is done via demos, acceptance criteria, and stakeholder feedback.
* D - Progress tracking uses tools like burndown charts or cumulative flow diagrams.

The correct answer is B - Create a team norms document to set participation guidelines. Establishing team norms improves psychological safety, trust, and collaborative behavior. It provides a structured way to handle differences of opinion and ensure equal contribution.
From the PMI Agile Practice Guide:
"Team norms or working agreements are guidelines created by the team to set expectations for behavior, participation, and communication. These norms are agreed upon early and revisited as needed to support healthy collaboration." (PMI Agile Practice Guide, Section 4.3 - Team Charter and Working Agreements) Mike Griffiths elaborates:
"High-performing agile teams create shared agreements that clarify roles, expectations, and behavior. When team conflict or disconnects arise, practitioners should guide the team to revisit or develop such norms." (Mike Griffiths, PMI-ACP Exam Prep, Chapter 4 - Team Performance) Incorrect options:
* A lacks structure and may not address the root issue.
* C delays resolution and misuses the stand-up's purpose.
* D waits too long to act; issues should be addressed immediately, not deferred.