**Core Concept**
Pharyngeal diverticula, also known as Zenker's diverticula, are outpouchings of the pharyngeal mucosa through a weakness in the muscular wall of the pharynx, specifically at the Killian's dehiscence. This condition is often associated with dysphagia and regurgitation of food.

**Why the Correct Answer is Right**
The correct answer choice is related to the characteristics of pharyngeal diverticula. These diverticula are true diverticula, meaning they contain all layers of the pharyngeal wall. They are also more common in men and are often associated with conditions such as gastroesophageal reflux disease (GERD) and esophageal dysmotility. The presence of a Zenker's diverticulum can lead to chronic aspiration and respiratory complications.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because pharyngeal diverticula are not typically associated with a significant increase in intraluminal pressure.
**Option B:** This option is incorrect because the primary cause of pharyngeal diverticula is not related to a hiatal hernia.
**Option C:** This option is incorrect because the presence of pharyngeal diverticula does not typically cause significant bleeding.

**Clinical Pearl / High-Yield Fact**
A classic clinical presentation of Zenker's diverticulum is the "crunchy" sensation or "ball" feeling in the throat, which is often accompanied by dysphagia and regurgitation of undigested food. This symptomatology is due to the accumulation of food in the diverticulum.

**Correct Answer:** A.