To ask where your doctor is from in French, you would typically use the form "D'où vient-il?" This is the appropriate formal way to inquire about a male doctor.
Here are the choices you provided analyzed:
- D'où venez-vous? - This means "Where are you from?" but is a formal "you," not specifically about the doctor.
- D'où vient-il? - Correct, this means "Where is he from?" and is suitable for asking about your male doctor.
- D'où viens-tu? - This is informal, asking "Where are you from?" and is not suitable in a formal context, like with a doctor.
- D'où venez-tu? - This is also informal, asking "Where are you from?" which isn't appropriate in a formal context with a doctor.
So, the best choices to ask about your doctor being male would be D'où vient-il? (if you're asking about him) or D'où venez-vous? (if you're asking him directly). If you're looking for a general question about location without specifying gender, you can use D'où êtes-vous?.