**Core Concept**
Nasopharyngeal carcinoma is a type of head and neck cancer originating from the nasopharynx, often presenting with nonspecific symptoms due to its location. The **nasopharynx** is the upper part of the pharynx, and tumors in this area can affect **cranial nerves**, leading to various clinical manifestations.

**Why the Correct Answer is Right**
The most common presentation of nasopharyngeal carcinoma is with a neck mass, which is a result of **metastasis** to the cervical lymph nodes. This occurs because nasopharyngeal carcinoma tends to spread first to the lymph nodes in the neck before causing significant symptoms from the primary tumor site.

**Why Each Wrong Option is Incorrect**
**Option A:** Is incorrect because while nasal symptoms can occur, they are not the most common presenting feature.
**Option B:** Is incorrect as it is not typically the first symptom.
**Option D:** Is incorrect because, although it can be a symptom, it is not the most common presentation.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that nasopharyngeal carcinoma can present with **cranial nerve palsies**, especially if the tumor invades nearby structures.

**Correct Answer:** D. Neck mass.