**Core Concept**
The submandibular gland receives its sensory innervation from the lingual nerve, which is a branch of the mandibular division of the trigeminal nerve (V3). This innervation is responsible for transmitting sensory information from the gland to the central nervous system.

**Why the Correct Answer is Right**
The lingual nerve provides sensory innervation to the submandibular gland through its fibers that are responsible for transmitting general sensory information, including pain, temperature, touch, and proprioception. These fibers are derived from the trigeminal ganglion and are part of the trigeminal nerve's (V3) sensory distribution. The lingual nerve's sensory innervation is essential for the gland's proper function and sensation.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the auriculotemporal nerve, a branch of the mandibular division of the trigeminal nerve (V3), primarily provides parasympathetic innervation to the submandibular gland via the otic ganglion. It is not responsible for the gland's sensory innervation.
**Option B:** This option is incorrect because the buccal nerve, a branch of the mandibular division of the trigeminal nerve (V3), primarily provides sensory innervation to the buccal mucosa and the buccinator muscle. It does not innervate the submandibular gland.
**Option C:** This option is incorrect because the inferior alveolar nerve, a branch of the mandibular division of the trigeminal nerve (V3), primarily provides sensory innervation to the lower teeth and the mandibular bone. It does not innervate the submandibular gland.

**Clinical Pearl / High-Yield Fact**
The lingual nerve's sensory innervation of the submandibular gland can be compromised in cases of lingual nerve trauma or damage, leading to altered sensation and potentially affecting the gland's function. It is essential to consider this innervation when managing patients with submandibular gland disorders.

**Correct Answer: C.**