The aborigines first came from southeast asia to settle australia a. in 1200 b. about 40,000 years ago c. about 100 years ago d. in 1788

The correct answer is B. The Aborigines first came from Southeast Asia to settle Australia about 40,000 years ago.

Explanation:

It is thought that about 40,000-50,000 years ago, in the Pleistocene, the first Australians came from Southeast Asia. Those first settlers would have traveled from island to island, using the land bridges that joined many of them at that time, and traveling short sea stretches to reach the eastern end of the Lesser Sunda Islands and the island of New Guinea, and then move by the Australian continental shelf, then above the level of the seas.