medium · LSAT Logical Reasoning

Which one of the following, if true, most strengthens the archaeologist's conclusion?

1. No intermediary settlements between the coast and the mountains ever possessed, handled, or redistributed pottery bearing those distinctive glaze patterns.
2. The mountain kilns produced a far larger volume of glazed pottery, year after year, than any of the dozens of other kilns then operating across the region.
3. The coastal settlement was, by every surviving measure of stored grain and minted coin, the single wealthiest community along the entire seaboard in that era.
4. Pottery with patterns superficially similar to, but on close inspection not identical to, those glazes has been recovered at several unrelated inland sites.
5. The mountain communities are independently known to have prized, and to have actively sought out, the cured salt and dried fish available only along the coast.

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