The examples of the Inuit and Aboriginal Australians are offered in the passage to show:
Explanation:
The examples of the Inuit and Aboriginal Australians are offered in the passage to show how geographical factors lead to different human behaviours.
Option (a) talks mainly about human resourcefullness, which is not the point of author in taking these two examples. The main point is geographical factors affecting human behaviours.
Option (b): The passage no where mentions geographical isolation.
Option (c): This is the best description of why author mentions these two examples.
Option (d): The main point is not that environmental factors lead to divergent paths, but that these factors influence human behaviour.
Hence, option (c).
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