Which of the following is NOT a method of microbial control?

Incubation is a process that involves maintaining microorganisms under specific environmental conditions to promote growth and reproduction. It is primarily used in laboratories to culture and study microorganisms, rather than to control or eliminate them. Microbial control methods are designed to reduce, eliminate, or inhibit the growth of microorganisms for the purposes of sterilization, disinfection, or antisepsis.

On the other hand, pasteurization is a method of heating liquids to kill or inactivate harmful microorganisms without significantly affecting the taste or quality of the product. Freezing, while it may not kill all microorganisms, slows down their metabolic processes and inhibits growth. Alcohol-based hand sanitizers are effective in reducing the number of pathogens on hands by denaturing proteins and disrupting cell membranes. These methods are actively used to manage the presence of microorganisms, making them recognized methods of microbial control.