The correct answer is (c) Small Intestine.
The small intestine is the longest part of the digestive system, and it is where most of the absorption of digested food material takes place. The small intestine is divided into three parts: the duodenum, jejunum, and ileum. The duodenum is the first part of the small intestine, and it is where the stomach contents are mixed with bile and pancreatic juices. The jejunum is the middle part of the small intestine, and it is where most of the absorption of nutrients takes place. The ileum is the last part of the small intestine, and it is where bile salts and vitamin B12 are absorbed.
The small intestine is lined with millions of tiny finger-like projections called villi. The villi increase the surface area of the small intestine, which allows for more efficient absorption of nutrients. The villi are also lined with microvilli, which are even smaller projections that further increase the surface area of the small intestine.
The small intestine is a very important part of the digestive system. It is where most of the absorption of digested food material takes place. The small intestine is lined with millions of tiny finger-like projections called villi, which increase the surface area of the small intestine and allow for more efficient absorption of nutrients.