What is a key benefit of using a dive computer during cavern diving?

Using a dive computer during cavern diving offers significant advantages, particularly in tracking and managing nitrogen absorption, which is a crucial factor in diving safety. This device continuously monitors depth and time, calculating the diver's nitrogen loading based on the current dive profile. By doing so, it helps prevent decompression sickness by alerting the diver to safe ascent rates and ensuring they stay within the no-decompression limits. This capability enhances the diver's ability to stay safe and informed throughout the dive, making it an invaluable tool for managing physiological pressures and enhancing overall safety in cavern environments.

On the other hand, the other options do not provide the critical safety and management features that dive computers offer. While speed during ascent, reducing equipment weight, and improving underwater communication are important aspects of diving equipment and techniques, they do not have the same direct impact on the management of nitrogen absorption and diving safety as a dive computer does.