**Core Concept**
Paralytic ileus is a temporary cessation of the normal contractions of the bowel muscles, leading to a buildup of food, fluids, and gas in the intestines. This condition can be caused by various factors, including surgery, inflammation, or electrolyte imbalances.

**Why the Correct Answer is Right**
The correct answer involves understanding the pathophysiology of paralytic ileus. In this condition, the smooth muscle cells of the gastrointestinal tract become uncoordinated and slow, leading to a failure of peristalsis. This can be due to decreased intracellular calcium levels, which are essential for muscle contraction. Additionally, the release of inflammatory mediators, such as prostaglandins and histamine, can also contribute to the development of paralytic ileus.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because paralytic ileus is indeed characterized by a buildup of gas in the intestines, which can lead to abdominal distension and discomfort.
**Option B:** This option is incorrect because paralytic ileus can be caused by electrolyte imbalances, such as hypokalemia, which can affect the function of smooth muscle cells in the gastrointestinal tract.
**Option C:** This option is incorrect because paralytic ileus is not typically associated with an increase in bowel movements or diarrhea.

**Clinical Pearl / High-Yield Fact**
A key feature of paralytic ileus is the absence of bowel sounds on abdominal examination, which can help differentiate it from other causes of abdominal pain.

**Correct Answer:** C.