Final answer:
Precleaning a surface aims to reduce microbes and remove body fluids identified as contaminants. Antiseptics are suitable for microbial control on living tissues. Regular cleaning disrupts biofilms and helps prevent contamination.
Step-by-step explanation:
The purpose of precleaning a surface is to reduce the number of microbes and remove blood, saliva, and other body fluids, which are referred to as D. Contaminants.
Regarding microbial control on tissues to prevent infection, the appropriate option is B. antiseptic. An antiseptic is suitable for use on living tissues to destroy or inhibit the growth of microorganisms without causing significant damage to the tissue.
Biofilms, consisting of microorganisms enmeshed in a sticky extracellular matrix, are a reason for concern since they can harbor pathogens and contribute to their persistence on surfaces. Regular cleaning and use of effective cleaning agents can help disrupt biofilms and prevent contamination. Understanding how to control microbiological contaminants is crucial, especially in medical settings, where aseptic techniques are vital for ensuring patient safety.