The now extinct species "Thylacine" was native to where?

The story behind the answer

Tasmania, Australia is correct because the thylacine—also called the Tasmanian tiger for its striped back—survived only on the island of Tasmania by the time Europeans arrived. Although it once ranged across mainland Australia and New Guinea, it disappeared there thousands of years ago, leaving Tasmania as its last refuge.

The thylacine was the largest known carnivorous marsupial, not a true tiger or wolf. The last confirmed individual died in Hobart Zoo in 1936 after intense hunting bounties, habitat loss, disease, and competition from dogs. Memory tip: “Tasmanian tiger” points straight to Tasmania. The island’s isolation preserved the species longer than the mainland, making Tasmania central to its history and legacy.