**Core Concept**
The question is testing the understanding of **Strongyloides stercoralis** infection, specifically the cause of **larva currens**, a characteristic dermatological manifestation. This condition is associated with the migration of larvae through the skin.

**Why the Correct Answer is Right**
Larva currens is caused by the rapid migration of **Strongyloides stercoralis** larvae through the skin, leading to a linear or serpiginous urticarial rash. This occurs in individuals with a high parasite load, often in the setting of immunosuppression or hyperinfection syndrome. The larvae can penetrate the skin and migrate rapidly, causing the characteristic rash.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not directly related to the rapid migration of larvae.
**Option B:** Incorrect as it is not the primary cause of larva currens.
**Option C:** Incorrect because, although it involves the skin, it is not the correct cause of larva currens.

**Clinical Pearl / High-Yield Fact**
Larva currens is a distinctive feature of strongyloidiasis, particularly in immunocompromised patients. Recognizing this condition is crucial for early diagnosis and treatment.

**Correct Answer:** D. Strongyloides stercoralis