I argue that although Japanese and English wh-questions are alike in some respects, e.g., the scope of the wh-phrase is determined by the relation with a [+WH] C, the derivation and syntactic structure of Japanese wh-questions, including the one like (2c) that looks very much like the question in (1b), are not exactly like those in English.
i claim that overt syntactic movement of wh-phrases in Japanese is the result of scrambling, the same operation that applies to non-wh-phrases.