Which of the following conditions may increase the risk of a diving emergency?

Temperature extremes can significantly increase the risk of a diving emergency for several reasons. When divers are exposed to cold water, they may experience hypothermia, which can impair their judgment, physical performance, and overall awareness while diving. Similarly, warm waters can lead to overheating, dehydration, and an increased risk of decompression sickness if dives are not planned appropriately.

In addition, temperature fluctuations can affect buoyancy and the behavior of gas in the body. For instance, a diver who rises quickly from cold water to a warmer surface may experience expanding gases in their body, which can cause barotrauma or other related conditions. Therefore, being in environments with extreme temperatures necessitates greater vigilance, proper thermal protection, and adherence to safety protocols to mitigate these risks.