Elephantiasis is a disease that results in

Options

A. long-term effect on health
B. short-term effect on health
C. no effect on health
D. occasional bad effects on health.

Explanation

### Step-by-Step Solution:

1. **Understanding Elephantiasis**:
- Elephantiasis is a chronic disease characterized by the severe swelling of body parts, primarily the limbs and genitals.

2. **Cause of Elephantiasis**:
- It is primarily caused by a parasitic infection from a worm known as Wuchereria bancrofti. This parasite is transmitted to humans through mosquito bites.

3. **Impact on the Lymphatic System**:
- The presence of the Wuchereria bancrofti worm leads to damage and inflammation of the lymphatic system, which is crucial for fluid balance and immune function in the body.

4. **Evaluating the Options**:
- **Option 1: Long-term effect on health**: This is correct as elephantiasis can lead to permanent changes in the affected body parts and can severely impact a person's quality of life.
- **Option 2: Short-term effect on health**: This is incorrect because the effects of elephantiasis are chronic and not short-term.
- **Option 3: No effect on health**: This is incorrect as the disease has significant health implications.
- **Option 4: Occasional bad effects on health**: This is also incorrect because the effects are not occasional but rather persistent and debilitating.

5. **Conclusion**:
- The correct answer is that elephantiasis results in a long-term effect on health.