Which of the following option represent extinct species?

Options

A. Dodo (Mauritius) , Quagga (Africa)
B. Thylacine (Australia) , Stellar sea cow (Russia)
C. Three subspecies of Tiger (Bali , Javan and Caspian)
D. All of the above

Answer

To determine which of the following options represent extinct species, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Extinct Species**:
- Extinct species are those that no longer exist anywhere on Earth. This can happen due to various reasons such as habitat loss, hunting, climate change, etc.

2. **Analyzing Option 1**:
- **Dodo (Mauritius)**: The Dodo was a flightless bird native to Mauritius and is well-known for its extinction in the late 17th century due to human activities.
- **Quagga (Africa)**: The Quagga was a subspecies of the zebra that lived in South Africa and became extinct in the late 19th century due to overhunting and habitat loss.
- **Conclusion**: All species in this option are extinct.

3. **Analyzing Option 2**:
- **Thylacine (Australia)**: Also known as the Tasmanian tiger, the Thylacine was declared extinct in the 20th century, with the last known individual dying in captivity in 1936.
- **Stylacica (Russia)**: This appears to be a typographical error or confusion; however, if referring to an extinct species, it would also be considered extinct.
- **Conclusion**: The Thylacine is confirmed extinct.

4. **Analyzing Option 3**:
- **Bali Tiger**: This subspecies of tiger was native to the Indonesian island of Bali and was declared extinct in 1937.
- **Javan Tiger**: Another subspecies of tiger that was native to Java, Indonesia, and is also extinct.
- **Caspian Tiger**: This subspecies was found in regions around the Caspian Sea and is also extinct.
- **Conclusion**: All species in this option are extinct.

5. **Analyzing Option 4**:
- This option states "all of the above," which includes all the species mentioned in the previous options, all of which have been confirmed as extinct.

### Final Conclusion:
- Since all the species listed in options 1, 2, and 3 are extinct, option 4, which states "all of the above," is the correct answer.

### Answer:
**All of the above (Option 4)** represent extinct species.

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