TOEFL Listening: TPO-TOEFL阅读TPO - LS__84EJUH34E53GN$

Why does the author include information about Tasmania in paragraph 4? A. To provide evidence that the Panaramitee style is widespread and of great age B. To prove that Aboriginal Australians could not have made the carvings in Tasmania C. To indicate how researchers have determined how long ago Tasmania separated from the mainland D. To illustrate the importance of geometric rock art to tourism in Tasmania