SAT Command of Evidence practice question

Archaeologists excavating a high-altitude pre-Inca settlement at Cerro Chivateros identified numerous ground-stone tools alongside charred botanical remnants. While some scholars argue that the site served merely as a temporary, seasonal hunting camp, archaeologist Elena Morales suggests that the community was occupied year-round and engaged in specialized processing of highland root crops such as maca and mashua.

Which finding, if true, would most directly support Morales's suggestion?

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