Given the principle of naturalness of sound change, in the comparative method of reconstruction, which one of the options may be reconstructed as a proto form for the cognates in Language P, Language Q, Language R, Language S, and Language T?
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In the comparative method, when reconstructing a proto-form, look for the form that can explain all of the variations across languages with the fewest assumptions and the most natural sound changes.
Step 1: Understanding the principle of naturalness of sound change.
The principle of naturalness of sound change in comparative reconstruction suggests that sound changes tend to occur in a predictable, systematic manner. Phonological shifts often simplify or adjust to easier-to-articulate forms over time.
Step 2: Analyzing the forms.
In Language P and Language Q, we have the form [asa], which is identical, suggesting that this form might be the closest to the original proto-form.
In Language R, Language S, and Language T, we observe the form [aha]. This represents a shift, but it is a plausible and natural change, where the vowel [a] might have shifted to [h] over time in the respective languages.
Given this distribution, [asa] is the most likely proto-form because it is attested in two languages (Language P and Language Q), and the form [aha] could have naturally evolved from [asa] through a sound change like a glottal stop or vowel shift.
