To fully eliminate all infectious microorganisms which of the following measures must be used?

To fully eliminate all infectious microorganisms, sterilization must be used. Sterilization is a process that kills or removes all microorganisms, including fungi, bacteria, spores, and viruses. It is important to note that disinfection and sanitization do not necessarily eliminate all infectious microorganisms, as they are designed to reduce microbial growth and presence rather than completely eradicate all life forms.