What must happen if the Development Team recognizes it cannot complete all selected items during the Sprint?

When the Development Team recognizes that it cannot complete all selected items during the Sprint, collaborating with the Product Owner to adjust the Sprint backlog is the appropriate course of action. This reflects the Agile principle of adaptability; rather than rigidly sticking to a plan that is no longer feasible, the team must assess the situation, determine what can realistically be accomplished, and make necessary adjustments.

This collaboration ensures that the team remains focused on delivering the highest value possible within the Sprint's timeframe. The Product Owner plays a critical role here because they have the final say on prioritization of the backlog and can offer guidance on which items might be less essential or need to be deferred. This interaction fosters transparency and allows for informed decision-making.

In contrast, notifying the Scrum Master, while important for keeping everyone informed, does not directly resolve the issue of managing the Sprint backlog. Working overtime may lead to burnout and is generally discouraged in Scrum, as it undermines sustainable development. Postponing the Sprint is not a viable option under Scrum methodology; a Sprint is a time-boxed event, and there are no extensions. Thus, the correct action emphasizes collaboration and prioritization to adapt to the team’s current capacity.