In the movie trailer below, a girl acting the role of what seems to be a journalist interviews a successful man and asks, "To what do you owe your success?" (At 53 seconds)
(1) Is that a natural way of asking the question in context?
(2) How about these other options? How do they compare to the original in naturalness?
a. "What do you owe your success to?"
b. "What do you owe your success?"
Top answer
1) Yes. 2a) This has a slightly less formal feel. 2b) Incorrect.
— GPY
1) Yes.
2a) This has a slightly less formal feel.
2b) Incorrect.
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I guess the more tightly the preposition is bound to the verb, the more unnatural the fronted order, with very tightly-bound cases being impossible rather than just unnatural. The latter category will include various idiomatic phrasal verbs; for example, "After whom are you looking?" is impossible.
Amongst the grammatically possible examples, I cannot actually think of any that are truly