Which of the following indicates a sanitation compliance check?

The correct choice indicates a sanitation compliance check because regular inspection reports by health authorities are systematic evaluations conducted to ensure that sanitation regulations and standards are being met. These reports provide an objective assessment of food safety practices, hygiene standards, and compliance with local and federal health regulations. They typically involve inspections of food handling facilities, restaurants, and food service establishments, allowing authorities to identify any gaps in sanitation practices and enforce necessary improvements.

In contrast, random product sampling in stores primarily focuses on testing specific products for safety and quality rather than assessing overall sanitation compliance. Customer feedback surveys gauge consumer satisfaction and preferences but do not offer a standardized measure of sanitation practices. Marketing promotions for cleanliness are aimed at enhancing a business's image and attracting customers, but they do not serve as a reliable or official measure of compliance with sanitation standards. Regular inspection reports by health authorities are established and formalized checks specifically aimed at compliance, making them the correct answer.