In which circumstance is it acceptable for a Product Owner to change the Product Backlog items during a Sprint?

The correct answer is that it is acceptable for a Product Owner to change the Product Backlog items during a Sprint if new information or insights arise. In the context of Scrum, the concept of an emergent product backlog is fundamental. Agile methodologies, including Scrum, emphasize responding to change over following a strict plan. As development progresses in a Sprint, new insights may emerge related to user needs, market changes, technical feasibility, or other factors that could influence the priority or the details of backlog items.

When new information is available, it may lead the Product Owner to refine or adjust the backlog items to ensure that the most valuable features are prioritized. This responsiveness helps the team adapt to changes and focus on delivering the highest value to stakeholders. However, even with this flexibility, changes should still be made judiciously, ensuring that they do not disrupt the team's current work or Sprint goal.

In contrast, changing backlog items based solely on a team request may not always be appropriate, especially if those changes do not align with new information or insights. The Product Owner is responsible for managing the Product Backlog and prioritizing items based on value, which requires a balance between stakeholder input and strategic vision.

Changes based on incorrect estimation or other arbitrary reasons do not align