What are the first 3 steps to take if you set off a door alarm in error?

The sequence outlined in the correct choice emphasizes the importance of maintaining security and following proper protocols when an alarm is triggered accidentally. First, securely closing the door is critical because it helps to contain any potential security breaches and protects the facility's integrity. Next, using the SIDA badge to stop the alarm signifies compliance with security procedures and helps ensure that the alarm is promptly silenced without unnecessary disruption. Finally, calling Massport Keybase for further instructions is essential for getting the appropriate guidance, ensuring that all actions are in line with established emergency protocols, and maintaining communication with security personnel.

Other options may overlook critical steps necessary for ensuring safety and security in such situations. They might either encourage leaving the area without proper communication or fail to address the immediate need to secure the door and silence the alarm.