Which of the following is an example of an antiseptic procedure?

Handwashing is an example of an antiseptic procedure because it involves reducing the number of microorganisms on the skin, thereby minimizing the risk of infection. Antiseptics are substances that inhibit the growth and reproduction of microorganisms on living tissue, such as skin. Proper handwashing techniques using soap and water or alcohol-based hand sanitizers are effective in achieving this goal, making it a key practice in infection control, especially in healthcare settings.

In this context, other procedures listed serve different functions. For instance, using a disinfectant on surfaces aims to eliminate microorganisms on inanimate objects rather than living tissue. Applying a topical anesthetic is primarily aimed at providing comfort to patients during procedures but does not fit the definition of an antiseptic practice. Similarly, cleaning dental tools involves sterilization or disinfection processes for inanimate objects, which also distinguishes it from antiseptic procedures directed at living tissue.