Final answer:
The technique that can be used to serve large groups efficiently is double-sided buffet (option c) . This setup allows guests to access food from both sides of the buffet table, reducing congestion and wait times. Options like extra-large chafing dishes and extra-long single-sided buffets may not be as efficient for serving large groups.
Step-by-step explanation:
The technique that can be used to serve large groups efficiently is double-sided buffet. This is a setup where food is arranged on both sides of the buffet table, allowing guests to access food from either side. This helps to distribute the flow of guests and reduce wait times, resulting in more efficient service.
For example, if one side of the buffet table becomes crowded, guests can easily move to the other side to access the food they desire. This prevents congestion and ensures a smoother dining experience for large groups.
On the other hand, options like extra-large chafing dishes and extra-long single-sided buffet may not be as efficient for serving large groups. Extra-large chafing dishes may require frequent refilling, causing delays and interruptions in service. Extra-long single-sided buffets can lead to long queues and waiting times, especially if the guests are served sequentially.