Passage Summary: Archaeologists found some old kitchen gear in a well, sitting right on top of a pile of coins from the year 375. Because the tools were on top of the coins, they concluded the tools must have been thrown in at the same time or later than the coins.

Conclusion: The kitchen tools were placed in the well no earlier than 375 A.D.

Reasoning: The tools were found in an abandoned well physically located on top of a group of coins, some of which were minted in 375 A.D.

Analysis: The argument relies on the principle of stratigraphy—the idea that items found in lower layers were deposited earlier than items found in higher layers. To strengthen this, we need to ensure that the layers haven't been mixed up or tampered with over the centuries. Look for an answer that confirms the coins couldn't have been slid under the tools later or that the well's contents remained in their original order of deposit. If the ground was undisturbed, the 'bottom-up' timeline holds firm.