If the fourth floor is "off-line" with the central station due to welding and cutting, and an initiating device is activated on the eleventh floor, what action should the Fire Life Safety Director take?

In this scenario, the Fire Life Safety Director should immediately notify the Fire Department and request a response when an initiating device is activated on a floor while the fourth floor is "off-line" due to welding and cutting. This action is critical for safety because the activation of an initiating device indicates a potential fire or emergency situation that requires professional intervention.

Given that the fourth floor is currently not connected to the central station, there could be challenges in monitoring and responding to alarms and unusual activities on that floor. The activation on the eleventh floor is a direct signal that must not be overlooked, as it could indicate a fire or other hazardous conditions that may also affect adjacent floors.

Prompt notification to the Fire Department ensures that they can assess the situation, respond appropriately, and investigate thoroughly. It is imperative to prioritize life safety and ensure that professional firefighters are on their way to address the situation, as they are trained to handle emergencies effectively.

Options suggesting continuation of activities, checking with maintenance, or silencing the alarm and resetting the system do not adequately address the immediate danger presented by an activated device. Such actions could put lives at risk and hinder the ability to manage the emergency appropriately. Hence, swiftly notifying the Fire Department is the best course of action.