The major cause of diarrhoea in children is

Options

A. a bacterial infection
B. a fungal infection
C. antibiotics
D. none of these

Explanation

**Step-by-Step Solution:**

1. **Understanding Diarrhoea**: Diarrhoea is primarily a condition that affects the intestines, leading to frequent and watery bowel movements. It can be caused by various infections.

2. **Identifying the Causes**: The major causes of diarrhoea can include bacterial infections, viral infections, parasitic infections, and sometimes food poisoning.

3. **Focusing on Children**: In children, the most common cause of diarrhoea is often linked to infections, particularly bacterial infections.

4. **Causative Organisms**: The specific bacteria that are known to cause diarrhoea include:
- **Staphylococcus**
- **Clostridium**
- **Escherichia coli (E. coli)**
- **Salmonella**

5. **Conclusion**: Based on the information provided, the major cause of diarrhoea in children is a bacterial infection. Therefore, the correct answer to the question is "bacterial infection".

**Final Answer**: The major cause of diarrhoea in children is a bacterial infection.

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