Cleaning is best described as:

Cleaning is best described as the removal of dirt, grease, and food waste because this definition encompasses the comprehensive process necessary for maintaining a safe and hygienic food preparation environment. Effective cleaning involves more than just tidying up; it includes eliminating all types of soils that can harbor harmful bacteria and pathogens.

By focusing on dirt, grease, and food waste, this definition acknowledges the importance of addressing various contaminants that can compromise food safety. Residue from food can attract pests and contribute to cross-contamination, making it crucial for food handlers to regularly remove these substances to uphold health standards.

While the other options touch on aspects of cleanliness, they do not provide the full picture. Simply removing dust or unwanted food does not address the critical need for comprehensive sanitation that prevents the growth of harmful microorganisms. Similarly, pest control is a separate concern that, while vital for safety, does not fall under the definition of cleaning itself.