Answer the following question given this paragraph: The organs in Figure below make up the gastrointestinal (GI) tract. This is essentially a long tube that connects the mouth to the anus. Food enters the mouth and then passes through the rest of the GI tract. Food waste leaves the body through the anus. In adults, the GI tract is more than 9 meters (30 feet) long!. Q: What term describes the long tube that connects the mouth to the anus? A:

Select from the following. (i) metabolism tract. (ii) esophagus tract. (iii) lungs tract. (iv) gastrointestinal tract.
The answer is:
(iv)