What verbal commands should you use when an exit is unusable?

The correct answer emphasizes clear and direct communication during an emergency situation, ensuring passengers understand the immediate need to redirect themselves. The command illustrates urgency and provides specific actions the passengers should take—crossing over and turning around to find an alternative exit. This directiveness not only guides the passengers but also helps maintain order in a potentially chaotic environment.

Using "EXIT BLOCKED, CROSS OVER, TURN AROUND!" effectively conveys the critical information that a particular exit cannot be used, while simultaneously directing the flow of movement away from danger. This reduces confusion and aids in a more efficient evacuation process.

Other options may not be as effective in terms of clarity or urgency. Some may lack specific instructions on what actions to take next, which can be vital during an emergency. In situations where time and clear communication are crucial, having an assertive and directive command like this is essential for the safety of all aboard.