What are common sources of contamination from chemical contaminants?

Chemical contaminants can originate from a variety of sources within a food establishment, which directly correlates with the chosen answer. Food packaging can leach harmful substances into food if it is not suitable for food contact or damaged. Cooking equipment may also be a source of contamination, especially if it is not properly cleaned or maintained, as residues from cleaning agents and grease can introduce chemicals into food. First aid items, which may contain antiseptics or other chemicals, can also be a potential source if they come into contact with food or food preparation areas. Given that all these items can introduce chemical contaminants, selecting the option that encompasses all potential sources is correct. This understanding helps ensure that proper measures are taken to mitigate contamination risks in a food handling environment.