The given answer "Yes, I have never been to China." confirms the very words that were spoken in the question. Hence, the most suitable question will contain the same words as in the answer.
Option C: This question best corresponds to the answer/response. It's in the negative, asking if the person has never been to China.
(When someone asks you if you've never been somewhere, and you respond in the affirmative, you're saying that you have never been there.)
Hence option C is correct.
Option A: This question is worded slightly differently. Also, 'ever' is a positive word, it cannot be responded to by saying 'yes, I have never.'
Option B: This question, too, is in the affirmative about 'ever going there', but the answer contradicts it.
Option D: This question is worded differently from the response ('visited' has replaced 'been to').
Since we need to choose the best corresponding question, option D is incorrect.