Which of the following is an example of a hazardous material?

Chlorine is classified as a hazardous material due to its toxic and corrosive properties. It is widely used as a disinfectant and in industrial processes but poses significant health risks, including respiratory issues and irritation to the skin and eyes, if inhaled or contacted. Its potential to cause harm in a concentrated form or as a gas makes it necessary for stringent handling, storage, and emergency response protocols to be in place.

In contrast, water, sand, and paper do not fall into the same category of hazardous materials. While they have their own characteristics and uses, they do not possess the same level of danger to health and safety that chlorine does, particularly in the context of emergency response and hazard classification.