Which milk option is typically available during breakfast?

The correct choice emphasizes a common milk option found on breakfast menus at many restaurants, including Jack in the Box. Typically, "regular milk" refers to whole milk or 2% milk, which are traditional offerings for breakfast beverages. The inclusion of regular milk aligns with common breakfast pairings, such as with cereal or breakfast sandwiches.

In contrast, while whole and skim milk have their places on menus, they are often categorized specifically and may not be labeled as "regular." Soy milk, though popular among those with dietary restrictions or preferences, is less standard and may not be available in all locations, particularly for breakfast items. Therefore, regular milk is the most universally offered choice suitable for typical breakfast configurations.