as far as I'm aware that's illegal you can't be marking an exam subjectively and remember hsc markers have set times so I don't think they would really care about what suburb you pick just whether it actually answers the question
i honestly think eco activity and ecosystems at risk is more safe, you're guaranteed to get those questions rather than urban places being out of three options
u reckon best way to get through as many short answer questions is just planning what you would write. i don't think its time efficient to do every single short answer question possible
ive got a decent essay for activity only thing is it doesn't have anything on future trends so I'm just gonna try and integrate it into my response throughout if they ask for nature, spatial and future trends