Why should divers use quick-release systems on gear?

Using quick-release systems on diving gear is crucial primarily to minimize the risk of entanglement. While engaging in underwater activities, divers can encounter various hazards, including entangled lines, plants, or fishing gear. Quick-release systems provide divers the ability to rapidly detach themselves from their gear in emergencies. This prompt release can prevent potential drowning or other serious injuries caused by being trapped or dragged down by tangled equipment.

The other choices do not directly relate to the primary function of quick-release systems. For instance, quick-release mechanisms do not inherently enhance buoyancy, improve visibility, or control the rate of ascent. Instead, their main design is focused on safety and the ability to respond swiftly to unforeseen situations while underwater.