Answer:
Small intestine.
Step-by-step explanation:
The small intestine is the longest part of the digestive system and is responsible for the majority of digestion and absorption of nutrients. It is divided into three sections: the duodenum, jejunum, and ileum. The small intestine is where most of the digestion and absorption of food takes place. The duodenum is responsible for the breakdown of proteins, fats, and carbohydrates, while the jejunum and ileum absorb the nutrients from the digested food.