Hominids adapted to life on the ground approximately _____ years ago.

Question

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Based on current scientific evidence, it is believed that hominids first adapted to life on the ground 5-7 million years ago with the evolution of bipedalism. Option A is not a realistic timeline as 3.5 billion years ago is the time when life on Earth first emerged. Option B is far too recent, as Homo sapiens (modern humans) have only been around for about 300,000 years. Option C is also an unrealistic timeline as complex life forms did not exist 600 million years ago.

Hominids Adapted to Life on the Ground Approximately _____ Years