Which of the following is an example of chemical contamination in food service?

Chemical contamination in food service refers to hazardous substances that can inadvertently come into contact with food and cause harm when consumed. The presence of cleaning agents or pesticides in food is a prime example of chemical contamination, as these substances are not meant to be ingested and can lead to serious health issues.

Cleaning agents, such as detergents or sanitizers, are used to maintain a hygienic environment in food preparation areas. If these substances are not properly rinsed off or if food comes into contact with them during the cleaning process, they can contaminate the food. Pesticides, on the other hand, are chemicals used to control pests in agriculture, and if residues are left on fruits and vegetables, they pose a risk to consumers if ingested.

The presence of foreign objects like hair or glass shards falls under physical contamination, and bacteria from raw meat is an example of biological contamination. Improperly stored food may lead to spoilage or cross-contamination but does not directly involve chemicals that affect food safety. Therefore, the correct choice highlights the critical importance of managing chemicals in food service to prevent contamination and protect consumer health.