The presence of very large molars and a sagittal crest on top of the skull is evidence of

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Large molars and a sagittal crest are adaptations for a diet based on tough, fibrous, and gritty vegetation, which would require more chewing power and stronger jaw muscles. This is consistent with a herbivorous diet rather than increased hunting activity (D). Brain organization (C) cannot be inferred from these physical characteristics and there is no evidence of adaptation to cold climates (A) or the earliest use of domesticated plants (B) in this context.

The Presence of Very Large Molars and a Sagittal Crest