Final answer:
In the context of the provided options for a smoked cheese used in mac and cheese, smoked Cheddar is a common choice due to its rich texture and tangy flavor that pairs well with the dish.
Step-by-step explanation:
The type of smoked cheese typically used in mac and cheese can vary based on the recipe or one's personal preference. However, among the options provided, A) Cheddar is a common choice for smoked cheese in this dish. Smoked cheddar provides a rich, creamy texture and a sharp, tangy flavor that complements the creamy béchamel sauce often used in mac and cheese recipes.
The other options, such as Swiss, Gouda, and Feta, can also be used in mac and cheese, but they are not as typical as smoked cheddar. Therefore, if we must choose from the given options for a classic smoked cheese mac and cheese, smoked cheddar would be the answer.