Which of the following is NOT an example of materials establishments may use in hazard analyses?

The option referencing public relations materials is not suitable for use in hazard analyses because these materials are primarily designed to promote an establishment's image or reputation rather than provide objective, scientific data relevant to food safety. Hazard analyses require rigorous, evidence-based information to assess potential risks and implement effective controls.

In contrast, in-plant validation data, scientific journal articles, and published scientific research results all contribute directly to a solid foundation for understanding hazards and validating processes. In-plant validation data reflect specific operational conditions and outcomes, scientific journal articles provide peer-reviewed insights, and published scientific research results offer empirical evidence necessary for informed decision-making related to safety protocols. Therefore, relying on credible, scientifically-based sources is essential in hazard analyses, making public relations materials an inappropriate choice.