During the Absorption stage of food processing, the process of a substance leaving the digestive tract occurs. The correct option is 4.
What is digestion?
Digestion is the breakdown of food material and releasing of energy. Digestion starts from the mouth, where the saliva contains digestive enzymes, which break down carbohydrates.
The process of digestion begins with ingestion, in which food is intake and then the digestion occurs in the stomach and liver. After this, absorption happens, in which the nutrient from the food is absorbed by the stomach. After this, the elimination of waste material occurs.
Absorption is a process by which the nutrient and energy are absorbed by the blood, during this process the nutrients cross the cell membrane to leave the digestive tract.
Thus, the correct option is 4. Absorption.
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