Before allowing the silencing of signals, what type of warning must accompany the visual warning?

The correct answer is that a flashing lamp must accompany the visual warning before silencing signals. This requirement is based on safety standards that aim to ensure individuals are fully aware of an alarm condition before any action is taken to silence it. The flashing lamp serves as a persistent visual cue that continues to alert occupants to the alarm status, drawing attention to the emergency situation.

While other options may contribute to awareness or instructions in various contexts, the use of a flashing lamp has been specifically designated as a commonly understood and effective method to notify individuals of a potential danger, thereby reinforcing the importance of maintaining awareness even when a silencing action is being considered. This helps prevent accidental silencing of alarms during an actual emergency, ensuring that all individuals are adequately informed and can respond appropriately.