What should be included in a lost diver kit?

A lost diver kit should ideally include a clump, line, and buoy because these components work together to assist in locating and retrieving a diver who may be in distress or lost underwater.

The clump serves as a weight, which helps to stabilize the line in the water and aids in keeping the buoy upright, making it easier for rescuers to spot. The line provides a means to connect the clump and buoy while also giving rescuers a way to reach or retrieve the missing diver. The buoy, being a visible surface marker, is crucial for providing a signal to those above water about the location of the incident, allowing for effective search and rescue operations. This combination ensures a comprehensive approach to diver safety and recovery.

Other options would not provide the necessary equipment for an effective search and rescue situation, lacking the synergy that the clump, line, and buoy create when a diver is lost.