Which one of the following is unlikely to be used when serving Guests?ACheese trolleyBDessert trolleyCWater trolleyDWhisky trolley

To determine which item is unlikely to be used when serving guests, we should consider the context and common practices in food service.

1. Cheese Trolley: This is commonly used in fine dining establishments where cheese is served as part of the meal or as a separate course.

2. Dessert Trolley: Similar to the cheese trolley, a dessert trolley is often used in restaurants to present a variety of desserts for guests to choose from.

3. Water Trolley: While serving water is essential, it is less common to have a dedicated trolley for just water, especially in casual dining settings. Instead, waitstaff often serve water directly from a pitcher or bottle.

4. Whisky Trolley: A whisky trolley can be used in establishments that have a focus on beverages, especially in a bar or a high-end restaurant where whisky tasting is part of the experience.

Conclusion:

The Water trolley is the option that is least likely to be used when serving guests, as service staff usually provide water without needing a specialized trolley for it.

Final Answer:

C. Water trolley