Final answer:
The claim that humans have used walking as their main mode of travel for a long time is supported by evidence that humans traveled on foot to Asia approximately 60,000 to 80,000 years ago.
Step-by-step explanation:
The detail from the excerpt that best develops the claim that humans have used walking as their main way of traveling for a long time is the statement that approximately 60,000 to 80,000 years ago, humans traveled by foot to Asia and then settled in various locations. This demonstrates that walking was the primary mode of transportation for humans at that time, as they had to traverse a significant distance on foot.
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