Which of the following body systems determines the type of feed given to an animal?

The digestive system determines the type of feed given to an animal. The digestive system is responsible for breaking down food into nutrients that the animal can use for energy, growth, and repair. Different animals have different digestive systems that are adapted to their specific diets. For example, herbivores have longer digestive tracts with specialized organs like the rumen for fermenting plant material, while carnivores have shorter digestive tracts adapted for digesting meat. Therefore, the digestive system is the body system that determines the type of feed given to an animal.