The question asks which wild animal has sub-species identified as Sri Lankan, Indian, Sumatran, and Bornean. To determine the correct answer, we need to examine each option and see which one aligns with these sub-species.
- Rhinoceros (Rhinoceros unicornis): The Indian Rhinoceros is commonly found in the Indian subcontinent. However, it does not have sub-species categorized as Sri Lankan, Sumatran, or Bornean.
- Spotted Deer (Axis axis): Also known as the Chital, this species is found in the Indian subcontinent but does not have sub-species known as Sri Lankan, Sumatran, or Bornean.
- Tiger (Panthera tigris): Tigers have several subspecies, including the Bengal Tiger (Indian), Indochinese Tiger, Malayan Tiger, Sumatran Tiger, Siberian Tiger, and South China Tiger. However, they do not have a specific Bornean subspecies.
- Asian Elephant (Elephas maximus): The Asian Elephant does have sub-species, including:
- Indian Elephant (Elephas maximus indicus)
- Sri Lankan Elephant (Elephas maximus maximus)
- Sumatran Elephant (Elephas maximus sumatranus)
- Borneo Elephant (also known as the Bornean Pygmy Elephant, Elephas maximus borneensis)
- Sarus Crane (Antigone antigone): This species of crane is native to the Indian subcontinent, Southeast Asia, and Australia but does not have recognized subspecies classified as Sri Lankan, Sumatran, or Bornean.
Therefore, the correct answer is the Asian Elephant (Elephas maximus), as it matches the given description of having sub-species in Sri Lanka, India, Sumatra, and Borneo.