Which of the following is an essential part of sanitizing utensils?

Soaking utensils in a sanitizing solution is an essential part of sanitizing because this process effectively kills harmful bacteria and pathogens that may be present on the surfaces. Sanitizing solutions are typically made from approved chemicals, such as bleach or quaternary ammonium compounds, diluted to the correct concentration. When utensils are soaked for the appropriate time in this solution, it ensures that they are not only cleaned but also sanitized, significantly reducing the risk of foodborne illnesses.

Other methods mentioned, such as rinsing with cold water or washing with cold soapy water, do not provide the necessary level of sanitation. Rinsing may remove some debris but will not eliminate pathogens. Washing with cold soapy water cleans the utensils but lacks the sanitizing effect needed to ensure they're safe for food preparation. While letting utensils air dry is a good practice to prevent contamination after sanitizing, it does not contribute to the sanitization process itself. Thus, soaking in a sanitizing solution is the critical step that ensures utensils are safely sanitized and ready for use in food handling.