Explanation:

In Agile, ensuring that the product works without bugs or missing features can be achieved through continuous testing and validation of the product. Test-driven development (TDD) is an approach where tests are written before the code is developed. This helps ensure that each feature is fully tested as it is built, focusing on customer requirements from the start and preventing issues from accumulating. By using TDD, the product owner ensures the product is being tested incrementally, which reduces the risk of defects and aligns with customer expectations for a high-quality product upon release.

The correct answer is A - Suggest the product owner start by focusing on the next 2 sprints instead of 10.
Agile embraces progressive elaboration - planning is done in detail only for the near term, while long-term plans remain high level and flexible. By encouraging short-term focus, the Scrum Master helps the product owner shift from a predictive mindset to an adaptive one.
PMI Agile Practice Guide:
"Agile projects plan at multiple levels (release, iteration, and daily), focusing on near-term commitments while allowing flexibility for change. Planning multiple sprints in detail violates the principle of adaptability." (PMI Agile Practice Guide, Section 5.3 - Progressive Elaboration) Mike Griffiths adds:
"Detailed long-term estimates reduce agility. The product owner should learn to prioritize work based on value, and accept that estimates beyond the next sprint or two are rough forecasts." (PMI-ACP Exam Prep, Chapter 5 - Adaptive Planning) Other options:
* B undermines agile principles by reverting to waterfall planning.
* C misuses the retrospective, which is team-focused.
* D may alienate the product owner rather than encourage a mindset shift.

In Scrum, responsibilities are distributed among the product owner, scrum master, and development team to ensure clear accountability and efficient value delivery.
* The product owner manages the product backlog, ensures alignment with business goals, and defines the priorities for the team.
* The scrum master facilitates the Scrum process, removes impediments, and ensures adherence to Agile principles.
* The development team owns the sprint backlog and is responsible for incremental delivery toward the sprint goal.
This division of responsibilities ensures that each role focuses on their core areas, fostering transparency, collaboration, and value-driven development.

The correct answer is A - Continue working on the task until it is completed. Agile teams commit to the sprint goal and are expected to deliver what they've planned to the best of their ability. If a task takes longer than estimated, the team inspects and adapts but generally tries to complete the committed work within the current sprint.
From the PMI Agile Practice Guide:
"Agile teams are committed to delivering the work they planned for the iteration. If estimates are off, the team inspects the impact and continues, learning from it for future planning." (PMI Agile Practice Guide, Section 5.3 - Iteration Planning and Commitment) Mike Griffiths explains:
"If something takes longer than expected, the team should strive to complete it and use the experience to improve future estimation. Agile teams maintain sprint commitment integrity." (Mike Griffiths, PMI-ACP Exam Prep, Chapter 5 - Adaptive Planning) Incorrect options:
* B is punitive and unaligned with Agile values.
* C contradicts Agile's emphasis on stable teams and sustainable pace.
* D breaks commitment and risks value delivery.