Which of the following tasks should NOT be performed one hour prior to closing?

Stacking unused chairs one hour prior to closing is generally not advisable because it can create safety hazards and reduce customer comfort during the last hour of business. This time is often when the restaurant is still occupied by customers, and stacking chairs may obstruct their movement or create an unwelcoming atmosphere.

In contrast, cleaning the dining area, taking out the trash, and checking temperatures are all tasks that contribute to maintaining a clean and efficient environment and can enhance the customer experience. Cleaning the dining area ensures that it is presentable for customers who may be dining late, while taking out the trash helps maintain hygiene and prevents unpleasant odors. Checking temperatures is crucial for food safety and is a standard procedure that should occur regularly to ensure all items are stored at safe temperatures.