**Core Concept**
Intermediate cementum is a type of cementum that forms on the root of teeth, specifically between the acellular and cellular cementum layers. It is characterized by its unique histological features and plays a crucial role in tooth attachment and periodontal health.

**Why the Correct Answer is Right**
Intermediate cementum is formed by cementoblasts, which are specialized cells that lay down the cementum matrix. This type of cementum is rich in unmineralized matrix and has a distinct histological appearance, with a characteristic "basket-weave" pattern. It serves as a transitional zone between the acellular and cellular cementum, allowing for smooth integration of the two layers and enhancing tooth stability.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because intermediate cementum is not merely a thin layer of cementum, but rather a distinct type of cementum with unique histological features.
* **Option B:** This option is incorrect because intermediate cementum is not formed by osteoblasts, but rather by specialized cells called cementoblasts.
* **Option C:** This option is incorrect because intermediate cementum is not a type of bone, but rather a specialized type of cementum.

**Clinical Pearl / High-Yield Fact**
It's essential to recognize that intermediate cementum plays a crucial role in maintaining tooth stability and periodontal health. Damage to this layer can lead to tooth mobility and other periodontal issues.

**Correct Answer:** C.