Define "decompression stop."

A decompression stop refers to a planned pause during ascent in a diving scenario, essential for allowing a diver's body to safely expel nitrogen absorbed during the dive. As a diver descends and then ascends, the pressure changes can cause nitrogen to form bubbles if the ascent is too rapid. These bubbles can lead to decompression sickness, often referred to as "the bends," which can be life-threatening.

The purpose of a decompression stop is to provide the diver with the necessary time to safely release this excess nitrogen from their body by ascending slowly and halting at specific depths. This controlled ascent minimizes the risk of injury due to rapid changes in pressure.

During this stop, divers may use specific time intervals based on their depth and the specifics of their dive profile to ensure their safety. In contrast, the other options do not directly relate to the critical aspect of managing nitrogen saturation during ascent; they focus on equipment checks, safety drills, or rest, which are important but not the primary function of a decompression stop.