What is the purpose of a dive computer in a DLSS?

The purpose of a dive computer in a Diver Life Support System (DLSS) is to serve as an essential tool for ensuring the safety and efficiency of underwater activities. Option C highlights its primary functions: tracking dive time, monitoring depth, and calculating decompression limits in real time. This information is critical for divers to manage their exposure to pressure changes and to avoid decompression sickness, also known as "the bends."

By continuously calculating these factors during a dive, the dive computer helps divers make informed decisions regarding their ascent rates, safety stops, and overall dive duration. This real-time data enhances situational awareness and allows divers to adhere to safe diving practices, making the dive experience safer.

In contrast, tracking air consumption only (the first option) is a limited function and does not encompass the full range of critical information a dive computer provides. While measuring water temperature (the last option) might be beneficial for comfort or environmental awareness, it is not a critical safety feature. The idea of providing entertainment during the dive, mentioned in the second option, is not a functional purpose of a dive computer and detracts from the serious role it plays in dive safety.