What is a busser's primary responsibility in a restaurant?

The primary responsibility of a busser in a restaurant is to ensure that tables and floors are cleaned immediately. This role is crucial for maintaining a clean and welcoming dining environment for guests. A busser clears away used plates, utensils, and glasses promptly, which helps to keep tables tidy and ready for new guests, thereby enhancing the overall dining experience. Additionally, this cleaning process involves sweeping or mopping the floors to ensure safety and cleanliness throughout the establishment.

The other options do encompass important restaurant functions, such as taking orders or managing reservations, but they are duties typically performed by servers or hosts rather than bussers. Cooking food would fall under the chef's or kitchen staff's responsibilities, and a busser does not engage in these tasks. The focus for a busser is specifically on the cleanliness and organization of the dining area.