Sorry if this is the wrong place to post this, but I've been lurking in a lot of the trans threads and thought this would be the place to ask as so many of you seem to have more of a clue about these things than me.
I was just filling in a form on my council's website when I came across this question at the end, under the equality questions. It's not right is it? They've confused sex and gender haven't they? How can my sex be gender fluid?