Why might divers prefer using Nitrox over air in certain environments?

Divers often prefer using Nitrox over air, particularly in certain environments, because it can lead to reduced fatigue and improved safety margins on repetitive dives. Nitrox, which is a gas mixture of nitrogen and oxygen with a higher percentage of oxygen than the standard atmosphere, allows divers to have longer bottom times at certain depths because it contains less nitrogen compared to air. This results in a reduced amount of nitrogen absorbed into the body, lowering the risk of decompression sickness on subsequent dives and leading to less fatigue overall.

Additionally, by using Nitrox, divers can often extend their no-decompression limits, allowing them to enjoy longer dives without compromising safety. This is especially beneficial in repetitive diving situations, where the risks associated with nitrogen loading can compound. The physiological benefits of using Nitrox make it a popular choice among divers operating in environments where multiple dives over a short period are common, enhancing their overall diving experience.

While the other options mention aspects related to diving with Nitrox, they either misrepresent the capabilities of Nitrox in terms of depth (as it does not inherently allow for deeper dives without risk) or inaccurately assert that it is always a faster option (which depends on the dive plan). Additionally, Nitrox does not inherently increase buoyancy