Which meal-type service has a set meal rate plus an operational charge?

The correct answer is the option that describes a meal-type service with a predetermined meal rate plus an operational charge, which is typically known as Table d'hôte. In this service style, a fixed menu is offered at a set price, and it generally includes multiple courses. The operational charge may cover additional services such as beverage options or service staff, distinguishing it from other concepts that operate more flexibly.

In contrast, buffet service allows guests to fill their plates from a variety of food stations at a fixed price, but typically does not include a separate operational charge since everything is self-service. À la carte refers to ordering individual dishes at separate prices rather than a single bundled price, meaning it does not fit the characteristics of having a set rate plus additional operational costs. Family style involves sharing dished food placed in the center of the table, which also operates differently from the discussed pricing structure.

Understanding these distinctions helps clarify why Table d'hôte best fits the description of having a set meal rate with operational charges.