**Core Concept**
Woodruff's plexus is a network of nerve fibers that are involved in the autonomic innervation of the nasal mucosa. It plays a crucial role in regulating nasal secretions and is located in the lateral wall of the nasal cavity. The autonomic nervous system's control over nasal secretions is essential in maintaining mucociliary clearance.

**Why the Correct Answer is Right**
The correct answer involves the autonomic nervous system, specifically the parasympathetic and sympathetic divisions. Woodruff's plexus is a parasympathetic plexus that receives preganglionic fibers from the pterygopalatine ganglion. This plexus releases neurotransmitters that stimulate the mucous glands in the nasal mucosa, leading to increased nasal secretions. The sympathetic nervous system, on the other hand, has a vasoconstrictor effect on the nasal blood vessels.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not specify the location of Woodruff's plexus in the nasal cavity. While the nasal cavity is a correct location, the specific location of the plexus is essential.
* **Option B:** This option is incorrect because it does not mention the autonomic nervous system's role in regulating nasal secretions. The autonomic nervous system's control over nasal secretions is a crucial aspect of Woodruff's plexus.
* **Option C:** This option is incorrect because it does not specify the type of plexus or its location in the nasal cavity. While the nasal cavity is a correct location, the specific type of plexus and its location are essential.

**Clinical Pearl / High-Yield Fact**
Woodruff's plexus is a classic example of the autonomic nervous system's control over mucociliary clearance. This knowledge can be useful in understanding various nasal conditions, such as rhinitis, and the effects of medications on nasal secretions.

**Correct Answer:** C.