Final answer:
b.sterilization.
The third level of infection control is sterilization, which aims to completely remove or kill all forms of microbial life and is usually reserved for medical and laboratory settings. For use on tissues to control microbes and prevent infection, antiseptics are the suitable choice.
Step-by-step explanation:
The third level of infection control is sterilization. Sterilization is defined as the complete removal or killing of all vegetative cells, endospores, and viruses from the targeted item or environment. This process is often reserved for settings where it is imperative for items to be completely free of potentially infectious agents, like medical and laboratory environments. Sterilization can be achieved through physical means, such as exposure to high heat and pressure, or chemical means using sterilants, which effectively kill all microbes, viruses, and with sufficient exposure, endospores.
For microbial control on tissues to prevent infection, an antiseptic is most suitable. Antiseptics are antimicrobial substances that are applied to living tissue/skin to reduce the possibility of infection, sepsis, or putrefaction. Unlike disinfectants, which are used on surfaces and inanimate objects, antiseptics are mild enough to be used on human tissues.