Which of the following is not typically included in a milkshake?

The correct answer identifies bacon as not typically included in a milkshake. Milkshakes are traditionally made with a base of ice cream and milk, creating a creamy and sweet beverage. The combination of ice cream and milk contributes to the shake's texture and flavor, making it a dessert or treat that is often enjoyed.

While fruit can certainly be added to milkshakes to enhance flavor—think of options like strawberries, bananas, or even chocolate chips—it is not a standard component like ice cream and milk. Bacon, however, is not a commonly used ingredient in milkshakes and is generally associated more with savory dishes rather than sweet treats. This makes bacon the option that stands out as an unusual and non-traditional addition to a milkshake.