What is the purpose of a disinfectant?

The purpose of a disinfectant is to serve as a chemical agent applied to inanimate surfaces in order to kill pathogenic microorganisms. This is crucial in maintaining a hygienic environment, especially in veterinary settings, to prevent the spread of diseases and infections. Disinfectants are used on surfaces such as floors, tables, cages, and equipment that come into contact with pets or their waste.

In contrast, the other options refer to different concepts. The first choice involves agents that are used on living tissue, which are antiseptics, not disinfectants. The third choice pertains to a specific process, sterilization, which is more thorough than disinfection because it eliminates all forms of microbial life, not just pathogenic ones. The last choice refers to antibiotics, which are used specifically for treating infections within living organisms, rather than disinfecting surfaces. Overall, the correct answer emphasizes the role of disinfectants in infection control and public health within veterinary practices.