The abbreviation "MILK" refers to which beverage?

The abbreviation "MILK" is directly related to the beverage known as milk. In the context of beverage terminology, "MILK" explicitly indicates cow’s milk or similar dairy fluids used in various drinks, particularly in coffee preparations or standalone servings. It is commonly featured in recipes and beverage menus, making it universally recognizable in the coffee industry and beyond.

While other options like hot chocolate and misto may contain milk as an ingredient, they do not represent the abbreviation "MILK" itself. Lemonade, being a completely different type of beverage, is unrelated to the term. Therefore, “MILK” specifically stands for the plain beverage of milk, which is why it is the accurate answer in this case.