Elephantiasis (Filariasis) in man is caused by

Options

A. Wuchereria
B. Culex
C. Trichinella
D. Schistosoma

Answer

### Step-by-Step Solution:

1. **Understanding the Disease**:
- Elephantiasis, also known as filariasis, is characterized by severe swelling of body parts, often the legs, which can resemble the limbs of an elephant. This condition is primarily caused by a parasitic infection.

2. **Identifying the Causative Agent**:
- The disease is caused by filarial worms. The specific type of filarial worm responsible for elephantiasis is known as Wuchereria bancrofti. This is a crucial point as it directly links the disease to its causative agent.

3. **Analyzing the Options**:
- The question provides four options:
- 1st option: Mutaria
- 2nd option: Culex
- 3rd option: Trichinella
- 4th option: Cystosoma
- Among these, we need to identify which one is the correct causative agent of elephantiasis.

4. **Evaluating Each Option**:
- **Mutaria**: This option seems to be a typographical error or misrepresentation. The correct term should be Wuchereria, which is the causative agent of elephantiasis.
- **Culex**: This refers to a genus of mosquitoes that act as vectors for filarial worms but are not the causative agents themselves.
- **Trichinella**: This is a genus of parasitic roundworms that cause trichinosis, not elephantiasis.
- **Cystosoma**: This refers to Schistosoma, which causes schistosomiasis, not elephantiasis.

5. **Conclusion**:
- Based on the analysis, the correct causative agent of elephantiasis (filariasis) in humans is Wuchereria bancrofti. Therefore, the answer is that elephantiasis is caused by a filarial worm, specifically Wuchereria.

### Final Answer:
Elephantiasis (Filariasis) in man is caused by Wuchereria bancrofti.

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