**Core Concept**
The question is testing the student's knowledge of the dual innervation of the skin, which is a common phenomenon where a particular area of skin receives nerve supply from two different nerves. This can lead to complex patterns of sensation and can be relevant in clinical scenarios such as nerve damage or injury.

**Why the Correct Answer is Right**
The correct answer is likely the skin over the little finger, which is supplied by both the palmar cutaneous branch of the ulnar nerve and the digital nerve branches of the median nerve. This dual innervation allows for a complex pattern of sensation, including touch, pressure, and proprioception, in this area of the hand.

**Why Each Wrong Option is Incorrect**
* **Option A:** The skin over the big toe is primarily supplied by the deep peroneal nerve, which is a branch of the common peroneal nerve.
* **Option B:** The skin over the sole of the foot is primarily supplied by the medial and lateral plantar nerves, which are branches of the posterior tibial nerve.
* **Option C:** The skin over the face is primarily supplied by the trigeminal nerve, which has three main branches (ophthalmic, maxillary, and mandibular) that supply different areas of the face.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the dual innervation of the skin can lead to complex patterns of sensation, and damage to one of the nerves supplying an area can result in altered sensation in that area. This can be an important consideration in the diagnosis and management of nerve injuries or damage.

**Correct Answer:** D.