A scientific team compared gold samples from several ancient artifacts with gold samples from an ancient mine in west...

on December 24 at 08:27PM

A

Is the gold deposit different than the gold mine? I thought gold mines were meant to tap into deposits? That is why I didn't even consider this answer choice, because it strengthened.

1 Reply

Irina on December 25 at 03:24AM

@tomgbean,

You are correct, the mine taps into a deposit. The reason (A) weakens the argument because it demonstrates that the deposit also supplied nearby riverbeds with gold, meaning gold with the same trace-element ratio was found in nearby riverbeds as well as the ancient mine, and the artifacts could have been made from gold obtained from the riverbed rather than the mine.