What happens 5 minutes before the over-ride time runs out?

The correct response indicates that a short alarm will sound as a warning that the override time is about to expire. This mechanism serves to provide immediate feedback to those who may be in the vicinity, alerting them that their access time is nearing its end. Such an auditory alert is particularly useful in high-security environments where adherence to timing can be crucial for both safety and operational integrity. It allows badge holders to be aware of their access status and take necessary actions, such as exiting or ensuring that their access is appropriately managed.

The other choices describe actions that do not typically occur right before the override time expires in this context. For instance, sending alerts to all badge holders or text notifications would not provide the immediacy needed in a high-security environment, as they may rely on delayed communications. Similarly, if the door were to automatically close without prior warning, it could lead to confusion or potential security violations, contradicting the purpose of the override mechanism.