Lactitol is derived through the hydrogenation of:

Correct option is C

Lactitol is derived through the hydrogenation of lactose. It is a sugar alcohol used as a sugar substitute in various food products and medicines due to its similar sweetness to sugar but lower caloric content.
- Maltose, lactic acid, and glucose are different carbohydrates with their own properties and uses, not directly related to the production of lactitol.