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?

Choose the option that correctly matches the names of scholars (P – S) in column X with the fields or approaches (i – iv) in column Y they are primarily associated with.

Given the Hindi and English words below, which one of the options is the reason for their similarity?
