Final answer:
To prevent hot glasses from being used for cold beverages, it is important to rotate them when stocking.
Step-by-step explanation:
When stocking glasses, it is important to rotate them to prevent hot glasses from being used for cold beverages. This is because the hot glasses can crack or shatter when exposed to cold liquids, which can be dangerous for the person using the glass. By rotating the glasses, you ensure that each glass gets used in a balanced way and avoids any potential accidents.