Well, the Oesohpagus, as mentioned, is simply a British-english term for Esophagus, so that's C out of the running. Obviously, D. stomach is talked about here, and when it mentions "solid waste pass[ing] out of your body" that can probably mean that it's referring to a quick trip to the bathroom, and the only way you could achieve that without getting yourself messy is with the Rectum! so, now that we've eliminated three out of the four answers, it can be noted that the answer to Q84 is a. Colon. Now, if you give me a hot second, I'll get back to you on Q85!