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Difficulty: HardInferences from the Text

Throughout the late nineteenth century, comparative Indo-European philology was dominated by the premise that the divergence of the Indo-European language family was characterized by an ancient, fundamental geographic rupture into Western and Eastern branches. This dichotomy was codified primarily through the 'centum-satem isogloss,' a phonological distinction based on the treatment of Proto-Indo-European palatovelar consonants: Western languages (such as Celtic, Germanic, and Italic) merged these sounds with plain velars (the centum development), whereas Eastern languages (such as Indo-Iranian, Slavic, and Armenian) assibilated them into fricatives or affricates (the satem development). Because all known satem languages occupied the eastern expanse of the language family’s territory and all known centum languages occupied Europe, historical linguists widely inferred that this isogloss reflected the earliest bifurcation of Proto-Indo-European, resulting from two ancestral populations migrating in opposite directions from an unlocated homeland.

This neat spatial taxonomy was decisively upended in the early twentieth century by the recovery and decipherment of manuscript fragments from the Tarim Basin in Central Asia. These texts, written in previously unknown languages designated Tocharian A and B, proved upon grammatical and lexical analysis to belong unequivocally to the Indo-European family. Crucially, however, Tocharian exhibited the phonological hallmarks of a centum language, lacking the sibilant reflexes that characterized adjacent Indo-Iranian tongues. The presence of a centum language at the easternmost geographic boundary of the ancient Indo-European world precluded the hypothesis that the centum-satem split represented a straightforward, eastward-versus-westward territorial division of the proto-speech community. Instead, linguistic historians were compelled to reconsider the wave model of language change, proposing that the satem sound shift was a secondary, areal innovation that originated in a central dialectal zone and radiated outward, leaving archaic peripheral branches—such as Celtic in the far west and Tocharian in the far east—unaffected.

Which of the following inferences regarding the phonological characteristics of Tocharian is most strongly supported by the passage?

  1. A
    They demonstrate that the ancestral speakers of Tocharian migrated to Central Asia from Western Europe after the divergence of Celtic and Germanic.
  2. B
    They were rapidly displaced by the sibilant consonants of neighboring Indo-Iranian languages once regional commercial networks expanded.
  3. They represent the retention of an earlier phonological state rather than a shared innovation that spread across the entire Proto-Indo-European speech community.Answer
  4. D
    They led nineteenth-century comparative philologists to immediately abandon the concept of an unlocated geographic homeland for ancestral Proto-Indo-European speakers.
  5. E
    They prove that the Proto-Indo-European language family originated in the Tarim Basin before radiating toward Europe.

Answer

The phonological characteristics of Tocharian represent the retention of an earlier phonological state rather than a shared innovation that spread across the entire Proto-Indo-European speech community.
The passage establishes that twentieth-century linguists explained Tocharian's centum status through the wave model, wherein the satem sibilant sound shift was a 'secondary, areal innovation' that radiated from a central area, leaving 'archaic peripheral branches' like Tocharian unaffected. Because Tocharian was untouched by this subsequent innovation, its phonological profile constitutes the preservation of an earlier, pre-innovation linguistic state rather than a widespread innovation.

Step-by-Step Solution

1
Analyze the passage's description of the earlier model versus the revised wave model.
Nineteenth-century linguists believed the centum-satem split was a primary geographic bifurcation. The wave model revised this by identifying the satem sound shift as a 'secondary, areal innovation' that originated centrally and radiated outward.
Understanding the nature of the satem sound change is necessary to deduce the status of centum characteristics in peripheral languages.
2
Evaluate how the author characterizes peripheral centum languages like Tocharian under the wave model.
The author specifically describes Tocharian and Celtic as 'archaic peripheral branches' that remained 'unaffected' by the radiating satem innovation.
Characterizing a branch as 'archaic' and 'unaffected' by an 'innovation' entails that its features constitute an older retained state rather than an adopted innovation.
3
Synthesize the deduction to select the supported inference.
Tocharian's centum phonology is an instance of phonological retention (conservatism) in an isolated periphery rather than a pan-Indo-European sound shift.
This matches the correct choice while eliminating distractors that introduce unsupported migrations, timeline errors, or unmentioned homeland claims.

Key Concept

Textual Inference via Conceptual Synthesis
Estimated Time:2m 30s
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Inferences from the Text

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