Soru

In the late nineteenth century, the Neogrammarian school of historical linguistics revolutionized the discipline by positing the absolute regularity of sound change, asserting that phonetic laws admitted of no true exceptions within a given phonetic environment. Prior to this, apparent anomalies in Jacob Grimm's eponymous formulation—which mapped regular consonant shifts from Proto-Indo-European to Proto-Germanic—were frequently dismissed by philologists as the sporadic, capricious drift of vernacular speech. The most vexing of these anomalies was the voiced fricative exception: in certain cognate pairs, voiceless Proto-Indo-European stop consonants mysteriously manifested as voiced Proto-Germanic stops rather than the predicted voiceless fricatives. Rather than abandoning the premise of mechanical regularity, Karl Verner hypothesized that an unrecorded conditioning factor was operating. By comparing Germanic forms with Vedic Sanskrit, which retained archaic Proto-Indo-European pitch-accent placement, Verner demonstrated that the shift to voiced consonants occurred exclusively when the ancestral stress did not immediately precede the consonant in question. Verner's identification of this suprasegmental conditioning factor was pivotal: it rescued the foundational Neogrammarian axiom of exceptionless sound laws by revealing that what previous scholars had categorized as random phonetic decay was in fact governed by an overlooked structural variable.

In the passage, the author refers to "Vedic Sanskrit" primarily in order to do which of the following?