Final answer:
The correct way to serve a custard cone is to keep your fingers on the paper jacket to ensure proper hygiene and prevent contamination of the food.
Step-by-step explanation:
The acceptable way to serve a custard cone is D) keep your fingers on the paper jacket. This ensures that you maintain proper hygiene by not touching the cone directly with your fingers, which could contaminate the food. Serving a cracked cone or one with custard dripping is unacceptable as it could be a sign of poor handling or quality. Similarly, touching the cone directly with your fingers is not advisable due to the reasons mentioned above. When serving food, especially items that are eaten directly without cutlery, it is important to minimize the risk of transferring germs from our hands to the food. Therefore, keeping your fingers on the paper jacket while serving a custard cone ensures cleanliness and customer satisfaction.