What event could cause a project’s planned completion date to be pushed out?

The correct answer emphasizes that if a task assignment is given to a user who has scheduled time off, it can lead to delays in the project. When a team member is unavailable due to planned time off, they cannot progress on their assigned tasks. This absence can create a ripple effect, causing subsequent tasks dependent on that work to be pushed back, ultimately leading to a revised project completion date.

In contrast, while the choice mentioning the manual addition of a risk could impact project management, it does not inherently result in a delay unless it leads to significant risk factors being realized. Similarly, assigning tasks to job roles rather than individuals can sometimes optimize workflow, but does not automatically create a delay unless it leads to confusion or inefficiencies. The expansion of project scope without revising timelines is a common occurrence, but this pertains more to planning and may not directly cause a completion date push unless it fundamentally alters resource allocation or task timelines.