What should the guide explain to the group during a power outage?

In the scenario of a power outage during a cave tour, it is crucial for the guide to ensure the safety and well-being of the group. If there is a generator on-site, the guide should explain that turning on the generator will help restore lighting and other essential services. This response not only reassures the guests but also provides a practical solution to the immediate problem, allowing the tour to continue safely and comfortably.

The other responses may not be appropriate or effective in this situation. Waiting for help to arrive could create unnecessary panic or discomfort among the group. Exiting the cave immediately could pose safety risks, as caves may have unstable conditions during unexpected situations. Allowing only flashlight use could limit visibility and create challenges in maintaining order and organization within the group. Hence, explaining the need to turn on the generator is the most logical and supportive option during a power outage in a cave setting.