Statutory Interpretation is there every year with the same question, just explain all four rules with relevant cases and some advantages and disadvantages. It's usually paired with human rights, precedent or delegated legislation so I'd suggest knowing those although they could ask anything as a part A.
Apart from those, EU law is likely to come up as well as the judiciary and law reform. Doubt legislation or the legal profession will come up and if it does you can always chose a different question. As there are only four questions compared to six, your safest bet is knowing majority of topics but know statutory interpretation because it's there every year without fail.