Explanation: In English, a question tag is a short question added to the end of a statement. The question tag should match the auxiliary verb in the statement. In this case, "has" is the main verb, and its contraction is "doesn't" in the negative form. Please note that the sentence is in simple present form. ‘Has’ is the main verb here and not an auxiliary verb. Therefore, the correct question tag is "doesn't he."
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