Final answer:
The best method to prevent contamination of surfaces by cleaning tools is proper storage and handling. For microbial control on tissues to prevent infection, antiseptics are the suitable substances. The correct answer is option B) Proper storage and handling.
Step-by-step explanation:
Preventing contamination of surfaces by cleaning tools is essential for creating a safe and hygienic environment. Answering the student's question, Regular sharpening of tools is not related to preventing contamination; it is more about maintaining the efficiency of the tools. Proper storage and handling of cleaning tools is the best method to prevent them from becoming a source of contamination. For example, if cleaning tools such as mops or rags are not stored properly, they can become breeding grounds for bacteria and potentially contaminate surfaces during cleaning. Using tools for a single purpose can help avoid cross-contamination between different areas or tasks but does not itself prevent the tools from becoming contaminated. Cleaning tools with a dry cloth is not always effective, as mentioned using a wet cloth once for cleaning optical components and discarding it is a better practice to prevent scratches.
As for the second question about microbial control to prevent infection, the term antiseptic refers to a substance that is suitable for use on tissues and can be applied to the skin to prevent infection by killing or inhibiting microbial growth. Disinfectant is more commonly used on non-living surfaces, and sterilant refers to a substance that completely eliminates all forms of microbial life. Using water will not be as effective as an antiseptic for microbial control on tissues. Therefore, the correct answer is option B) Proper storage and handling.