Most large whale species have been driven to the brink of extinction. Which of the following is most accepted explanation of this situation ?

Options

A. Overexploitation
B. Habitat loss
C. Pollution
D. Competition from introduced species

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the most accepted explanation for the decline of large whale species towards extinction.

2. **Identifying the Options**: The options provided are:
- Overexploitation
- Habitat loss
- Pollution
- Competition from introduced species

3. **Analyzing Large Whale Species**: Large whale species, such as the blue whale, are specifically mentioned as being driven towards extinction.

4. **Exploring the Concept of Whaling**: Whaling refers to the hunting and killing of whales for their meat, oil, and other products. This practice has historically led to significant declines in whale populations.

5. **Historical Context**: The International Convention for the Regulation of Whaling was established in 1966 to protect whale populations, and by the 1970s, many whale species were classified as endangered due to their declining numbers.

6. **Evaluating Each Option**:
- **Overexploitation**: This is the most significant factor. Commercial whaling has led to the killing of thousands of whales, severely impacting their populations.
- **Habitat Loss**: While habitat loss can affect many species, it is not the primary reason for the decline of whale populations.
- **Pollution**: Pollution affects marine life but is not the main cause of the current decline in large whale species.
- **Competition from Introduced Species**: This is generally not a significant factor for whales compared to direct human impact.

7. **Conclusion**: Based on the analysis, the most accepted explanation for the decline of large whale species is **overexploitation**.

**Final Answer**: Overexploitation

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