I know lots of people have responded to this already but I really struggled with that question too. I attended a few events with OC and eventually emailed in to ask whether, when explaining the skills we've developed through our hobbies and interests, we needed to explicitly link them back to law as the word count is so short to fully explain why law, why OC and our skills/hobbies. GR responded to say that it's good to be explicit and the reason for the strict word count is so we think about what we feel is most important to get across, but in this case, the question is asking about why you are particularly interested in commercial law at OC, so it's most important to focus on the why law and why OC. I hope this helps