The parasites that cause the disease malaria reproduce in human inside:

Options

A. the intestine
B. the skin
C. the fluid surrounding the brain
D. red blood cells

Answer

To answer the question about where the malaria parasite reproduces in humans, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Malaria Parasite**: The parasite that causes malaria is known as Plasmodium. There are several species of Plasmodium, with Plasmodium falciparum being the most common and deadly.

2. **Understand the Life Cycle of Plasmodium**: The life cycle of Plasmodium involves two hosts: the female Anopheles mosquito (which transmits the parasite) and humans. In humans, the parasite undergoes several stages of development.

3. **Locate the Site of Reproduction in Humans**: Within the human body, Plasmodium primarily targets red blood cells (RBCs). After entering the bloodstream, the parasite invades these cells.

4. **Reproduction Process**: Inside the red blood cells, the Plasmodium parasites reproduce asexually. This process leads to the multiplication of the parasites, which eventually causes the red blood cells to rupture, releasing new parasites into the bloodstream.

5. **Conclusion**: Therefore, the correct answer to the question is that the malaria parasite reproduces in the red blood cells.

### Final Answer:
The parasites that cause the disease malaria reproduce in human inside the **red blood cells**.

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