Passage Summary: Archaeologists found a bone with a mammoth picture in an old village. Since mammoths died out 13,000 years ago, they assume the village was active back when mammoths were still around.

Conclusion: The settlement where the engraved bone was found must have been inhabited during the era when mammoths still existed in that region.

Reasoning: A bone featuring a mammoth engraving was discovered at the site, and mammoths are known to have gone extinct in eastern North America roughly 13,000 years ago.

Analysis: The argument assumes a direct chronological link between the engraving and the occupation of the settlement. However, there is a significant gap: what if the settlers found an old, fossilized bone and carved it thousands of years after the mammoths were gone? To bridge this gap, the argument needs to assume the engraving wasn't done on a bone that was already ancient. Look for an answer that ensures the bone was engraved while mammoths were still alive to be seen.