**Core Concept**
Dacryocystorhinostomy (DCR) is a surgical procedure aimed at restoring the flow of tears from the lacrimal sac to the nasal cavity by creating a new passage between the two. This procedure involves the anatomical relationship between the lacrimal sac, nasolacrimal duct, and the nasal cavity.

**Why the Correct Answer is Right**
The correct answer involves understanding the anatomy of the nasal cavity and the pathway of the nasolacrimal duct. The nasolacrimal duct opens into the inferior meatus of the nasal cavity. In DCR, the opening is created into the nasal cavity to establish a new pathway for tear drainage. This procedure is typically performed to alleviate epiphora (excessive tearing) due to nasolacrimal duct obstruction.

**Why Each Wrong Option is Incorrect**
* **Option A:** The middle meatus is a part of the nasal cavity but is not the primary site of drainage for the nasolacrimal duct.
* **Option B:** The superior meatus is another region of the nasal cavity, but it is not directly related to the opening of the nasolacrimal duct.
* **Option D:** The nasopharynx is the upper part of the pharynx, which is not directly involved in the drainage of tears from the lacrimal sac.

**Clinical Pearl / High-Yield Fact**
When performing DCR, it's crucial to identify the correct location of the nasolacrimal duct's opening into the nasal cavity to avoid complications and ensure effective tear drainage.

**Correct Answer:** C.