What is one method of reducing the risk of decompression sickness when using nitrox?

Decreasing dive time is a valid method for reducing the risk of decompression sickness when using nitrox because it limits the amount of time that the body is exposed to increased partial pressures of nitrogen, thereby reducing the potential for nitrogen to accumulate in body tissues. When a diver spends less time at a certain depth, there’s less opportunity for nitrogen to be absorbed into the body, which is key in minimizing the risk of decompression sickness during ascent.

The other methods mentioned may not effectively reduce this risk; for example, increasing ascent rate could lead to insufficient time for safe decompression, while using deeper mixes can actually increase exposure to nitrogen at greater depths, potentially heightening risk. Similarly, descending faster does not contribute to minimizing nitrogen absorption and can result in rapid pressure changes that are not safe for the diver’s body.