Once the Edition mode command is selected in the Properties panel, for how long does it stay active?

The correct answer is that once the Edition mode command is selected in the Properties panel, it remains active until the end of the current session. This means that as long as the software remains open, users can continue to make modifications using the Edition mode without needing to reactivate it. This allows for a more fluid workflow, as users don't have to continuously re-engage the Edition mode every time they want to make adjustments.

The duration of active commands like this one is essential for user efficiency. Understanding that it stays active until the session ends helps users in planning their editing tasks and can prevent unnecessary interruptions in their work. This workflow feature supports tasks that require ongoing adjustments, making it convenient for users to manage properties as they perform their design tasks.

In contrast, the other options suggest different durations or conditions for how long the Edition mode stays active, which do not align with the functionality of the software during a session. For example, if it were only active until the project is saved, or for a limited time, that would disrupt the workflow by necessitating frequent reactivation, which is not the case here. Thus, the clarity and consistency of having it active until the session concludes are what make this answer the most accurate.