Final answer:
The correct term for the prescribed method of scrubbing hands and arms in preparation for surgery is a surgical scrub, which is option C) Surgical scrub. The substance suitable for use on living tissues for microbial control to prevent infection is an antiseptic, which is option B) antiseptic.
Step-by-step explanation:
The method in which hands and arms are scrubbed for a prescribed length of time is referred to as a surgical scrub. A surgical scrub is an extensive process that involves scrubbing starting from the fingertips, extending to the hands and forearms, and then going up beyond the elbows to reduce the normal microbiota on the skin's surface. This is done to prevent the introduction of these microbes into a patient's surgical wounds. Such procedures are critical in healthcare settings to prevent infection and are more involved than routine handwashing or degerming. Hence, the correct answer to the question is C) Surgical scrub.
For the second question, the suitable substance for use on tissues for microbial control to prevent infection is an antiseptic. Antiseptics are applied to living tissues to destroy or inhibit the growth of microorganisms, making option B) antiseptic the correct answer. A disinfectant, by contrast, is used on non-living surfaces to kill microbes, while a sterilant is used to destroy all forms of microbial life.