Which of the following is NOT one of the seven principles of HACCP?

The correct choice is C because "Improve customer service" is not one of the seven principles of Hazard Analysis and Critical Control Points (HACCP). HACCP is a systematic approach designed to identify and manage food safety hazards by applying specific principles focused on preventing contamination before it occurs.

HACCP principles include analyzing hazards, establishing critical control points, establishing monitoring procedures, and taking corrective actions, among others. The emphasis on food safety and quality means that the framework is specifically about ensuring that food products are safe for consumption, rather than about customer service, which, while important to a business, is not related to the technical elements of food safety management that HACCP addresses.

Understanding the principles of HACCP helps food safety professionals design effective food safety plans that protect consumers from foodborne illnesses, ensuring that processes are in place to identify, evaluate, and control potential hazards.