The boy regularly attend the classes, ____?

Explanation: The boy regularly attend the classes, ____? Explanation: The correct option is 'doesn't he'. The sentence is a question tag, and the tag must match the subject and tense. Since the main verb is 'attend', and the sentence is in the present tense, the correct auxiliary verb is 'does' in the negative form. Option A ('does he') is incorrect because it doesn't fit the negative question tag. Option C ('does he not') is incorrect because it's more formal and less commonly used in spoken English. Option D ('does not he') is incorrect because the auxiliary verb 'does' should precede the subject. Note: The question tag 'doesn't he' is used to confirm or clarify the statement.