Without trying to solve the clue, my initial reaction is that in this instance 'comment' would be translated as 'commentaire', as opposed to 'comment' = why.
Again, to use Elle's example, Ca va? as a question meaning 'comment ca va?' is common, but both questions are in everyday usage - It depends on one's own way of speaking and to whom the question is addressed. I would never have said just 'ca va?' to my boss!