How can individuals in a facility confirm the need for actions during an incident?

The correct choice is grounded in the effectiveness of visible alerts in conveying urgent information during an incident. Visible alerts, such as flashing lights, alarms, or display boards, are designed to capture the immediate attention of individuals in a facility, ensuring they are aware of the situation and need for action. This method allows for a clear, concise communication of crucial information without waiting for verbal confirmation or relying on technology that may fail during emergencies.

In contrast, while radios and phone notifications can facilitate communication, they may not always be reliable in high-stress situations or noisy environments where individuals may not hear or receive information promptly. Floor plans serve a different purpose by helping individuals navigate the facility but do not actively communicate the need for action. Thus, the prominence of visible alerts makes them the most effective means for confirming the need for actions during an incident.