…………………………….. causes amoebic dysentery.

Explanation

### Step-by-Step Solution:

1. **Identify the Disease**: The question asks about the causative agent of amoebic dysentery, which is also known as amoebiasis.

2. **Understand the Type of Organism**: Amoebic dysentery is classified as a protozoan disease. This means the causative agent is a protozoan organism.

3. **Locate the Site of Infection**: The protozoan responsible for this disease primarily resides in the large intestine of humans.

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