First of all look at what you want to be.. just list out professions that you think might intrest you more importantly choose a process you enjoy . . When you list your interest think of the journey to that proffestion.. for example to be a lawyer you need to be intrested in debates, constant learning, reading more and convincing people ... so if you enjoy that process then you know you need to join social ... . . Another example architecture .. If you enjoy the process of working hard, creating ,designing , solving problems ... then you know you need to join natural... . . . .so what i am saying is look beyond your intrest in the subjects at grade 11 and 12.. choose path you enjoy most and will help you achieve what you want.