Is it possible to order an a la carte protein?

The option that states it's not allowed to order an a la carte protein would indicate a policy in place regarding menu offerings at Moonrakers, which dictates how proteins can be ordered. This implies that the establishment may have a structured menu where proteins are only available as part of a set dish or combination rather than as standalone items. This approach can streamline kitchen operations, ensure portion control, maintain the quality of ingredients, and create a more cohesive dining experience for guests.

In contrast, the other options suggest varying degrees of flexibility in ordering proteins a la carte. If a la carte ordering were indeed permitted under specific conditions or always, it would indicate a more customizable experience for patrons. However, the chosen answer aligns with a more structured approach to the menu, emphasizing the restaurant's commitment to its specific offerings and the dining format.