[Solved] A ________ is a pattern composed of a sequence of characters that describe allowable input variants. A) canonicalization B) race condition C) regular expression D) shell script Liquid Stool: Stool that is more liquid than solid, often indicating diarrhea or a gastrointestinal condition affecting digestion and absorption. Fecal Occult Blood: The presence of blood in the feces that is not visible to the naked eye, often a sign of gastrointestinal diseases. False-negative: A test result that incorrectly indicates the absence of a condition or disease when it is actually present. Colostomies: Surgical procedures that create an opening from the colon to the surface of the abdomen, allowing for the diversion of bowel contents.