The correct answer is B - The customer changed requirements. Agile teams embrace change, especially when it improves the product's value. Customer-driven changes to requirements are the most common and legitimate reason for adjusting project plans in agile, supported by rolling wave planning and continuous backlog refinement.
From the PMI Agile Practice Guide:
"Agile projects anticipate changes in requirements. The product backlog is continuously updated to reflect new insights and customer needs." (PMI Agile Practice Guide, Section 5.3 - Rolling Wave Planning) Mike Griffiths emphasizes:
"In agile, planning is dynamic. The most common source of change is evolving customer requirements, which lead to changes in scope and prioritization." (Mike Griffiths, PMI-ACP Exam Prep, Chapter 5 - Adaptive Planning) Incorrect options:
* A is unrelated and unrealistic.
* C is useful but doesn't directly alter the project plan.
* D is ambiguous and doesn't reflect business-driven change.

In this situation, the most practical solution is to reduce the scope of the release to meet the deadline. Since one team member will be absent, causing a reduction in velocity, the team may not be able to complete all planned work in the time remaining. By reducing the scope, the team can focus on delivering the most critical features for the industry fair and ensure that the releaseis still valuable and on time. This aligns with Agile principles of prioritizing the most valuable work and delivering iteratively based on available capacity.

The act ofsharing iteration charts and progress metricsreflects a core agile value:transparency. According to thePMI Agile Practice Guide (Section 7.1: Communication and Transparency)andMike Griffiths' PMI-ACP Exam Prep Book (Chapter 4: Stakeholder Engagement), transparency enables stakeholders to participate constructively in decision-making and promotestrust and visibility.
* Option Ais correct: sharing charts buildsopenness and visibilityon the project's progress.
* Option Bmay occur, but it's not theprimary practicedescribed.
* Option Cfocuses ondelivery method, not transparency.
* Option Dis part of agile, but the emphasis here is onproject health visibility.

Based on the velocity chart, the team has completed 43, 42, 44, and 46 story points in previous sprints. The average number of completed story points is 43.75, and committing to 44 story points for the upcoming sprint aligns closely with this average. It offers a realistic target that takes into account the team's capacity while providing a reasonable chance of completing the planned work within the sprint.

The correct answer is B - Balance risk reduction and value-adding activities in the next iteration.
Agile recommends actively managing risks as part of iteration planning. While delivering customer value remains a top priority, severe risks should be mitigated as early as possible. The team should consider allocating capacity in the next sprint to reduce risk while still maintaining delivery focus.
PMI Agile Practice Guide states:
"Agile teams incorporate risk mitigation work into iteration planning. Teams should prioritize high-impact risks early and balance risk management with delivering customer value." (PMI Agile Practice Guide, Section 7.3 - Agile Risk Management) Mike Griffiths supports this:
"Agile does not separate risk management into a different process-it is embedded within backlog prioritization. Addressing risk early can prevent downstream impacts, and teams must weigh risk vs. value regularly." (PMI-ACP Exam Prep, Chapter 6 - Problem Detection and Resolution) Incorrect options:
* A disrupts current iteration goals and contradicts agile time-boxing.
* C ignores the severity of the risk.
* D escalates unnecessarily-agile promotes team-level decision-making first.