Whilst some essay questions may interest you more than others, it is important to be tactical in your choice. Choose the question that you feel that you have the most to say about rather than the one that you believe in most passionately. It is important to have facts which support a balanced argument rather than an emotive and one-sided piece of writing.
The most important aspect of your answer to this question is the structure of your arguments, and whilst no legal knowledge is required to succeed in the LNAT, it is always useful for candidates to have real-world knowledge which they can draw upon for essay material. Knowledge of current events functions as an arsenal which candidates can draw from in order to substantiate their arguments and add to the persuasiveness of their discussion. A good way to use current events as preparation is to watch the news and then think about how you would debate the issue yourself.