The digested food is absorbed by the .......... of the small intestine.
A. Villi
B. Rugae
C. Taenia coli
D. None of the above

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Hint: Small intestine is the organ in the gastrointestinal tract. The most of the absorption of nutrients and minerals take place in the small intestine. It receives bile and pancreatic juice through pancreatic duct which helps in further digestion of food.

Complete answer:
To solve this question we must know the structure of the small intestine which helps in absorption of nutrients.

The small intestine is present in between the stomach and the large intestine. It is the primary organ where most of the food is digested and absorbed. The walls of the small intestine are lined with simple columnar epithelial tissue called the plicae. The plicae forms a finger-like projection called the villi. This microvillus increases the surface area which helps in greater absorption of nutrients from the food.
Rugae- It is the folds of the mucous membrane present in the stomach. It helps in contraction of the stomach.
Taenia coli- It is the outermost smooth muscle band which is present in cecum and colon.They are three in number. It is present in the large intestine.

Hence, the correct answer is option (A)

Note: The villus is supplied with the blood vessel which helps in supplying the absorbed nutrients to all the parts of the body. This nutrient helps in producing energy to carry out metabolic processes, developing new tissues and fixing the worn out ones.