What safety equipment is typically provided to visitors on tours?

Helmets and lighting are essential safety equipment provided to visitors on cave tours. Helmets serve to protect the head from potential bumps or falls in the sometimes low-ceilinged and rugged cave environments. They also often come equipped with a light system, allowing visitors to see the cave's features clearly while exploring. Adequate lighting is critical in caves where natural light is absent, as it ensures safety and enhances the overall experience by illuminating the fascinating formations and passages inside the cave.

The other options, while important in different contexts, do not specifically align with the immediate safety concerns encountered during cave exploration.