Nitrox can cause much faster oxidation on some equipment items because of its higher content of:

The correct choice is based on understanding the chemical properties of the gases involved in Nitrox, which is a mix of nitrogen and oxygen with a higher percentage of oxygen compared to regular air. The higher concentration of oxygen in Nitrox can lead to more rapid oxidation processes because oxygen is a primary reactant in oxidation reactions. This increased oxidation can affect various equipment items, particularly those made of metal or other reactive materials, leading to issues such as corrosion or degradation over time.

Higher moisture content or nitrogen levels do not contribute directly to faster oxidation; rather, they could potentially dilute the effects of oxidation if present. Nitrox itself is a mixture, but it's the oxygen within that mixture that notably increases the risk of accelerating oxidation reactions. Understanding the role of oxygen in such reactions is crucial for maintaining diving equipment safe and functional.