**Core Concept**
Acantholysis refers to the loss of intercellular connections between keratinocytes in the epidermis, leading to the formation of intraepidermal blisters. This process is a hallmark of pemphigus, a group of autoimmune diseases characterized by the production of autoantibodies against desmoglein proteins.

**Why the Correct Answer is Right**
The correct answer involves the destruction of desmoglein 1 (Dsg1) and desmoglein 3 (Dsg3) proteins, which are cadherins that play a crucial role in maintaining the integrity of the epidermal intercellular connections. The autoantibodies in pemphigus bind to these proteins, leading to their internalization and degradation, resulting in acantholysis. This process disrupts the normal adhesion between keratinocytes, causing the formation of intraepidermal blisters.

**Why Each Wrong Option is Incorrect**
* **Option A:** The destruction of basement membrane zone (BMZ) proteins, such as collagen type VII and laminin 332, is associated with bullous pemphigoid, a different autoimmune disease characterized by subepidermal blisters.
* **Option B:** The destruction of hemidesmosomes, which are anchoring structures that attach the epidermis to the dermis, is associated with epidermolysis bullosa acquisita, another autoimmune disease characterized by subepidermal blisters.
* **Option C:** The destruction of keratin filaments is associated with epidermolysis bullosa simplex, a genetic disorder characterized by skin fragility and blistering.

**Clinical Pearl / High-Yield Fact**
Acantholysis is a key histopathological feature of pemphigus, and the presence of suprabasal acantholysis, particularly in the context of a positive Nikolsky's sign, is highly suggestive of this diagnosis.

**Correct Answer:** D