Final answer:
The probable reason for notifying the Fire Department even when the fire has been extinguished by a subway employee is because the Fire Department is Not required.
Step-by-step explanation:
The probable reason for notifying the Fire Department even after a subway employee has extinguished a fire is that the Fire Department is:
Not required.
Even if the fire has been extinguished by a subway employee, there are often regulations or standard operating procedures that mandate informing the Fire Department as a precautionary measure. This practice ensures that the proper authorities are aware of the incident and can conduct necessary inspections or investigations to confirm that the fire is completely out and that there are no remaining hazards or risks. Despite the fire being extinguished, the protocol might dictate informing the Fire Department for documentation purposes and to ensure compliance with safety protocols.