Which of the following conditions makes Nitrox particularly beneficial to divers?

Nitrox, which is a breathing gas blend of nitrogen and oxygen, is particularly beneficial to divers because it has a lower percentage of nitrogen compared to air. This reduced nitrogen content helps minimize nitrogen accumulation in body tissues during dives.

When divers use regular air, they are exposed to approximately 78% nitrogen, which can lead to greater nitrogen absorption by the body at deeper depths or during longer dives. This nitrogen accumulation can contribute to the risk of decompression sickness when ascending to the surface. By using Nitrox, divers can extend their bottom time and improve their safety margins, as there’s less nitrogen to off-gas upon ascent.

In contrast, the other choices do not underscore the advantages of using Nitrox. Low oxygen levels would be detrimental, as divers need adequate oxygen for safe diving. High energy requirements might relate to demanding dives, but Nitrox primarily helps by reducing nitrogen impacts rather than directly addressing energy needs. While increased nitrogen narcosis risk is a valid concern for divers using air at depth, it's not a condition that promotes the benefits of Nitrox, which is specifically designed to mitigate nitrogen's effects rather than exacerbate them.