Amoebic dysentery is caused by

Options

A. Entamoeba histolytica
B. Amoeba proteus
C. Entamoeba coli
D. Entamoeba gingivalis

Answer

**Step-by-Step Solution:**

1. **Understanding Amoebic Dysentery**:
- Amoebic dysentery, also known as amoebiasis, is an infection of the gastrointestinal tract, particularly affecting the intestines.

2. **Identifying the Causative Agent**:
- The question asks for the specific organism that causes amoebic dysentery. This is a parasitic infection caused by a protozoan.

3. **Reviewing the Options**:
- **Option 1: Entamoeba histolytica** - This is a known parasitic protozoan responsible for amoebic dysentery.
- **Option 2: Amoeba proteus** - This is a free-living amoeba that is non-pathogenic and does not cause disease.
- **Option 3: Entamoeba coli** - This is a non-pathogenic organism commonly found in the human gut, which does not cause disease.
- **Option 4: Entamoeba gingivalis** - This is also a non-pathogenic amoeba found in the oral cavity.

4. **Determining the Correct Answer**:
- Based on the information, the only option that is pathogenic and causes amoebic dysentery is **Option 1: Entamoeba histolytica**.

5. **Conclusion**:
- Therefore, the correct answer to the question "Amoebic dysentery is caused by" is **Entamoeba histolytica**.

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