What is an example of a non-milk extrinsic sugar?

Dextrose is classified as a non-milk extrinsic sugar because it is a simple sugar derived from glucose and is commonly found in various food sources outside of milk. Non-milk extrinsic sugars are those added to food or present in foods that do not contain lactose, making dextrose fit this definition.

In contrast, lactose is a type of sugar specifically found in milk and dairy products, which places it in the category of milk sugars. Sucrose, commonly known as table sugar, can be derived from sugar cane or sugar beets and is also included as an extrinsic sugar but it's usually found in a variety of foods and not specifically outside milk. Fructose, while also a non-milk sugar, is more commonly associated with fruits; however, among the choices provided, dextrose is a clear representation of a simple sugar not derived from milk or dairy products.