The transmission and infection of Entamoeba histolytica is through

Options

A. mosquito bite
B. bird droppings
C. contaminated food and water
D. sweat.

Explanation

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about Entamoeba histolytica, which is a protozoan parasite.

2. **Understand the Classification**: Recognize that Entamoeba histolytica belongs to the kingdom Protista and is a unicellular eukaryote.

3. **Know the Disease**: Understand that Entamoeba histolytica causes a disease known as amoebiasis, which primarily affects the intestines.

4. **Transmission Method**: Determine how Entamoeba histolytica is transmitted. It is primarily spread through contaminated food and water.

5. **Eliminate Other Options**:
- Option A (mosquito bite) is incorrect as it is not a vector for Entamoeba histolytica; it is associated with diseases like malaria and dengue.
- Option B (skin disorders) is also incorrect as it does not pertain to the transmission of this protozoan.
- Therefore, the correct option is C (contaminated food and water).

6. **Final Answer**: The transmission and infection of Entamoeba histolytica is through contaminated food and water.

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