GMAT Critical Reasoning (CR) | Re: Scientist: In testing whether a baby's babbling

It presents two possible interpretations of a phenomenon (whether a baby's babbling is a linguistic task or just random sounds ) and provides evidence in support of one interpretation (babbling babies open the right sides of their mouths wider than the left )and against the other (during nonlinguistic vocalizations people generally open the left side of the mouth wider . )
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