Urgh; tldr, I'll lock it by request.
But for future, BM is the epitome of irrelevance and bullcrapping. The exams are written so vaguely so that as long as you say something which isn't fundamentally incorrect, you won't lose marks for it. Likewise though, if it's irrelevant, you won't gain marks. However, speaking broadly prevents you missing out any potential marks because who's to know what's relevant and irrelevant in a 6-10 mark question? I've never worked out how VCAA's marked those so what I did was just keep talking. I filled up all the lines AND all the bonus lines in my exam. Seemed to work for me. Anywho, I know it's unfair for me to take a last stab before closing the thread but I'm going away for a few days and don't want this thread going feral, so PM me if you've got any problems with what I've said.