Final answer:
The geological age of LB 1, Homo floresiensis, is approximately 100,000-60,000 years ago. The first humans arrived in Australia around 65,000 years ago and Neanderthals went extinct around 40,000 years ago.
Step-by-step explanation:
The geological age of LB 1, the partial skeleton of Homo floresiensis, is approximately 100,000-60,000 years ago. This places it in the late Pleistocene period. In comparison, the first humans in Australia arrived around 65,000 years ago, which means they likely overlapped with the presence of Homo floresiensis. As for the extinction of Neanderthals in Europe, they went extinct around 40,000 years ago, so Homo floresiensis existed for a longer period of time.