Which statement best distinguishes cleaning from disinfection?

• A. Cleaning removes residues, dirt and grease; disinfection reduces micro-organisms to a safe level
• B. Cleaning and disinfection are identical
• C. Cleaning uses heat; disinfection uses chemicals
• D. Cleaning makes food taste better

Answer: (A)

The main idea is distinguishing what cleaning and disinfection aim to achieve. Cleaning removes residues, dirt and grease, using detergent and water to physically lift and wash away soils. Disinfection, on the other hand, lowers the number of microorganisms to a safe level, using sanitizers or other methods after surfaces are clean, so the remaining microbes won’t pose a risk. This sequence matters because soil can shield microbes and reduce disinfectant effectiveness, so cleaning first is essential before disinfection. The statement captures this difference by linking cleaning to removing soil and disinfection to reducing microbial load to safe levels. The other options misstate the relationship or oversimplify how these processes work, such as claiming they’re identical or limiting disinfection to only chemicals or heat, which isn’t the complete picture.