The intense is a tube about 10-13 feet long folded inside the human body

Im pretty sure it would be

The small intestine is a tube about 10-13 feet long folded inside the human body

Hope this helps best of luck, sorry if im wrong

~Animaljamissofab ♥

Small Intestine

The small intestine which is also called the small bowel is about 13-20 feet long tube and about an inch in diameter he small intestine is the part of the intestines where 90% of the digestion and absorption of food occurs. The small intestine is divided into the duodenum, jejunum, and ileum.

answer; /// i believe that the correct answer is (c) the concentration of active ingredients in a medication