Final answer:
Instruments and items used during services vary in the level of cleanliness needed, dictated by their risk of infection and use. Critical items must be sterilized, semi critical need high-level disinfection, and noncritical must be clean.
Step-by-step explanation:
The level of cleanliness required for instruments and items that come into contact with clients during a service depends on the risk of infection and how they are used. Critical items, such as surgical instruments, that penetrate sterile tissues or the bloodstream must be sterilized. Semi critical items like respiratory equipment, which contact mucous membranes or nonintact skin, require high-level disinfection but not sterilization. Noncritical items, including furniture and blood pressure cuffs, need to be clean but do not require high-level disinfection or sterilization.
Given the distinctions among different types of items, the correct answer to the question is that any implements that come in contact with the client during a service must be either sanitized, disposable, cleaned or sterilized depending on their usage category. However, to ensure the highest safety and health standards, sterilization is the best option for critical items that have the highest risk of transmitting infections.