**Core Concept**
Nasopharyngeal fibroma, also known as juvenile nasopharyngeal angiofibroma (JNA), is a rare, benign neoplasm that primarily affects adolescent males. This tumor arises from the nasopharynx and can cause various symptoms, including nasal obstruction, epistaxis, and cranial nerve palsies.

**Why the Correct Answer is Right**
The type of voice in nasopharyngeal fibroma is typically **hoarse** due to the tumor's location in the nasopharynx, which can cause compression or invasion of the pharyngeal mucosa and surrounding structures. This compression can lead to impaired vocal cord function, resulting in a hoarse or altered voice quality. The nasopharynx is closely related to the pharyngeal mucosa and the soft palate, which plays a crucial role in voice production.

**Why Each Wrong Option is Incorrect**
**Option A:** Nasal voice is not typically associated with nasopharyngeal fibroma, as the tumor's location is more likely to affect the pharyngeal mucosa rather than the nasal cavities.

**Option B:** High-pitched voice is not a characteristic feature of nasopharyngeal fibroma, as the tumor's effects on the pharyngeal mucosa and surrounding structures are more likely to cause a hoarse or altered voice quality rather than a high-pitched one.

**Option D:** Normal voice is unlikely in patients with nasopharyngeal fibroma, as the tumor's presence can cause significant symptoms, including nasal obstruction, epistaxis, and cranial nerve palsies, which can affect voice quality.

**Clinical Pearl / High-Yield Fact**
Nasopharyngeal fibroma, particularly juvenile nasopharyngeal angiofibroma, is a rare but potentially life-threatening condition that requires prompt diagnosis and treatment to prevent complications, such as cranial nerve palsies, nasal septal perforation, and intracranial extension.

**Correct Answer:** C.