Which of the following is an advantage of ozone disinfection?

Ozone disinfection is recognized for its ability to inactivate a broad spectrum of pathogens effectively. One of the significant advantages of ozone is that it decomposes to oxygen, leaving no harmful residues, which means it does not have the same toxicity concerns associated with some other disinfectants. This characteristic is particularly beneficial for aquatic ecosystems as it prevents harmful impacts on aquatic organisms, making option C accurate.

While the other statements touch on valid points regarding ozone disinfection, they do not represent advantages. For example, ozone is indeed more effective than chlorine for certain pathogens, and although it can produce byproducts, its non-toxic nature toward aquatic life sets it apart as a preferred disinfectant in many scenarios. Additionally, when compared to UV treatment, ozone can often be more cost-effective in the long run due to its effectiveness and lack of harmful byproducts.