Which statement best distinguishes cleaning from disinfection?

• A. Cleaning removes residues; disinfection reduces microorganisms to safe level.
• B. Disinfection removes residues; cleaning reduces microbes.
• C. Cleaning uses heat; disinfection uses chemicals.
• D. Disinfection is just cleaning with water.

Answer: (A)

Cleaning focuses on removing soil, grease, and food residues from surfaces using detergents and water. By lifting and washing away dirt, it helps prevent contamination and prepares surfaces for further treatment. Disinfection, on the other hand, aims to lower the number of microorganisms to a safe level, using chemical disinfectants or heat after cleaning has removed most soil. This distinction matters because cleaning alone may not kill microbes, and disinfection targets microbial reduction rather than dirt removal. So, the idea that cleaning removes residues while disinfection reduces microorganisms to a safe level best captures how the two processes differ.