Answer: Duodenum
Explanation:
Human body needs food to work efficiently. The food that is ingested by mouth is broken down into smaller components.
These smaller components are absorbed and energy is obtained from them. The digestion of takes place by the mechanical and chemical digestion.
Most of chemicals are secreted from the pancreas, liver and small intestine into the duodenum where maximum chemical digestion takes place.
Hence, the correct answer is duodenum.