**Core Concept**
The question is testing knowledge of **fungal morphology**, specifically the characteristics of **sclerotic bodies**. These structures are associated with certain fungal infections, particularly those caused by **dematiaceous fungi**.

**Why the Correct Answer is Right**
The description provided matches **Chromoblastomycosis**, a fungal infection characterized by the presence of **sclerotic bodies** (also known as **Medlar bodies** or **muriform cells**) in tissues. These bodies are 3-15μm in size, multiseptate, and have a chestnut brown color due to the accumulation of **melanin**.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it does not match the description of sclerotic bodies.
**Option B:** Incorrect as it is not associated with the specific characteristics mentioned.
**Option C:** Incorrect because it does not correspond with the fungal morphology described.

**Clinical Pearl / High-Yield Fact**
Chromoblastomycosis is a chronic fungal infection of the skin and subcutaneous tissue, commonly affecting individuals who work outdoors, and is typically caused by **Fonsecaea**, **Cladophialophora**, or **Phialophora** species.

**Correct Answer:** D. Chromoblastomycosis