Final answer:
The correct procedure when liquid is spilled in a restaurant with customers present is to immediately clean up the spill and put up caution signs. Safety is the top priority, and using the proper equipment, like gloves, to clean up is recommended.
Step-by-step explanation:
When liquid is spilled in a restaurant or foodservice operation while customers are in the area, the correct action to take is to clean up the spill immediately to prevent accidents. This means carefully and promptly addressing the spill with proper cleaning materials and displaying caution signs to alert customers. The priority in such situations is ensuring the safety and well-being of both customers and staff to prevent slips or falls.
Additionally, in line with good safety practices, it is crucial to always use appropriate safety equipment, such as gloves, when cleaning up spills, especially if the liquid could be potentially hazardous. If required, staff should report the incident to the appropriate personnel, much like in a laboratory setting where spills must be reported to a teacher or supervisor.