Elephantiasis, a chronic inflammation that results in gross deformities is caused by

Options

A. Ascaris
B. E.coli
C. Wuchereria
D. Trichophyton.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the causative agent of elephantiasis, which is a chronic inflammation leading to gross deformities.

2. **Identifying the Options**: The options provided are:
- Ascaris
- E. coli
- Wuchereria
- Trichophyton

3. **Analyzing Each Option**:
- **Ascaris**: This is a type of roundworm that causes ascariasis, which primarily affects the intestines and does not cause elephantiasis.
- **E. coli**: While some strains can cause diseases like diarrhea and urinary tract infections, they are not linked to elephantiasis.
- **Wuchereria**: This is a genus of parasitic worms, specifically Wuchereria bancrofti, which is known to cause lymphatic filariasis, leading to elephantiasis.
- **Trichophyton**: This is a genus of fungi that causes skin infections like ringworm, not elephantiasis.

4. **Conclusion**: Based on the analysis, the causative agent of elephantiasis is **Wuchereria**.

5. **Final Answer**: Therefore, the correct answer is **Wuchereria**.

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