Which of the following is the longest living animal?

Options

A. Whale
B. Giant tortoise
C. Hippopotamus
D. Elephant

Answer

**Step-by-Step Solution:**

1. **Identify the Options**: The question provides four options: whale, giant tortoise, hippopotamus, and elephant.

2. **Research Lifespan of Each Animal**:
- **Whale**: Specifically, the bowhead whale can live up to 200 years. It is known as the Arctic whale due to its habitat in the Arctic Ocean and has a slow metabolism.
- **Giant Tortoise**: This animal can live up to 150 years, with some individuals noted to live between 80 to 150 years.
- **Hippopotamus**: The lifespan of a hippopotamus is around 45 years.
- **Elephant**: Elephants typically have a lifespan of up to 70 years.

3. **Compare Lifespans**:
- Whale: up to 200 years
- Giant Tortoise: up to 150 years
- Hippopotamus: up to 45 years
- Elephant: up to 70 years

4. **Determine the Longest Living Animal**: From the lifespan comparisons, the whale has the longest lifespan, living up to 200 years.

5. **Conclusion**: The longest living animal among the given options is the whale.

**Final Answer**: The longest living animal is the whale.

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