In Minamata Bay, Japan which of the following animals remained free from "Minamata disease"?

Options

A. Cats
B. Rabbits
C. Dogs
D. Humans

Explanation

To solve the question regarding which animals remained free from "Minamata disease" in Minamata Bay, Japan, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Minamata Disease**: Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first identified in Minamata Bay, Japan, where industrial waste containing mercury was dumped into the bay, contaminating the marine life.

2. **Identify the Source of Contamination**: The disease is primarily caused by consuming fish and other marine animals that have accumulated mercury in their bodies through a process called bio-magnification. This means that mercury concentration increases as it moves up the food chain.

3. **Analyze the Options**: The options given are:
- Cats
- Rabbits
- Dogs
- Humans

4. **Determine the Feeding Habits**:
- **Cats and Dogs**: Both are carnivorous animals that may consume fish or other contaminated animals, making them susceptible to Minamata disease.
- **Humans**: Humans also consumed contaminated fish from Minamata Bay, leading to cases of Minamata disease.
- **Rabbits**: Rabbits are herbivores and primarily eat plants. They do not consume fish or other contaminated marine life, which means they are not exposed to mercury through their diet.

5. **Conclusion**: Since rabbits do not consume contaminated marine animals, they remained free from Minamata disease. Therefore, the correct answer is **Rabbits**.

### Final Answer:
**Rabbits** remained free from "Minamata disease" in Minamata Bay, Japan.

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