I'm sorry, I'm clearly turning into 'that' person.
Out of curiosity I looked at the exercise survey. And, there we are, yet again.
Q6 I am asked to think about one of my children. I can answer N/A I don't have any children. Q7 then asks me if my nonexistent child is a boy or girl. There is a 'prefer not to say option' but no N/A.
It is exactly the same issue I've already reported. If you already know that there have been problems of this specific type before, would it hurt for someone to spend 5 minutes double checking before publishing a survey?