**Core Concept:** Staining techniques are used in histopathology to enhance the visibility of specific structures or cellular components within tissue sections. In the context of this question, we are discussing the staining method used to visualize fungal elements in histological specimens.

**Why the Correct Answer is Right:** The correct answer, **Gomori Methenamine Silver (GMS) stain**, is a versatile and commonly used stain for demonstrating fungal elements, particularly in dermatological specimens. GMS stain works by binding to the chitin in fungal cell walls, which results in a distinctive, granular appearance that contrasts with the surrounding tissue.

**Why Each Wrong Option is Incorrect:**

A. **Hematoxylin and Eosin (H&E) stain:** H&E is a basic stain used primarily for general tissue staining, highlighting cell nuclei and cytoplasm. It is not specific for fungal elements.

B. **Ziehl-Neelsen stain:** This stain is primarily used for the detection of acid-fast bacteria, not fungal elements.

C. **Orcein stain:** Orcein stain is used for staining fungal elements, particularly in dermatological specimens. However, Gomori Methenamine Silver (GMS) stain is more specific for fungal elements and is considered the gold standard for this purpose.

D. **PAS (Periodic Acid-Schiff) stain:** PAS stain is commonly used for demonstrating carbohydrates in tissues but is not specific for fungal elements.

**Clinical Pearl / High-Yield Fact:** In clinical practice, Gomori Methenamine Silver (GMS) stain is often used in dermatology to identify fungal elements in skin lesions, helping in the diagnosis of dermatological conditions like dermatophytosis (ringworm).

**Correct Answer:** Gomori Methenamine Silver (GMS) stain.