The correct answer is option 'A', which states that the length of the highly coiled small intestine is 25 feet. The small intestine is a long, tube-like organ that is a part of the digestive system. It plays a crucial role in the digestion and absorption of nutrients from the food we consume.

The small intestine is divided into three parts: the duodenum, the jejunum, and the ileum. The duodenum is the shortest part, followed by the jejunum, and the ileum is the longest part.

Here is a breakdown of the lengths of each part of the small intestine:

1. Duodenum: The duodenum is the first part of the small intestine and is the shortest in length. It is approximately 10 inches long. It receives partially digested food from the stomach and continues the process of digestion by receiving secretions from the liver and pancreas.

2. Jejunum: The jejunum is the middle part of the small intestine and is responsible for the majority of nutrient absorption. It is around 8 feet long. The inner lining of the jejunum is covered in numerous finger-like projections called villi, which increase the surface area for absorption.

3. Ileum: The ileum is the final part of the small intestine and connects to the large intestine. It is approximately 12 feet long. The primary function of the ileum is to absorb any remaining nutrients and water that were not absorbed in the jejunum.

Overall, the highly coiled small intestine has a total length of approximately 25 feet. The coiled structure of the small intestine allows for a large surface area, which aids in the efficient absorption of nutrients into the bloodstream.

In conclusion, the small intestine is a vital organ in the digestive system, and its highly coiled structure allows for the efficient absorption of nutrients. The total length of the small intestine is approximately 25 feet.