Choosing an optional subject is one of the most crucial and fate deciding aspect of UPSC preparation. As the syllabus of optional papers is static and questions are often repeated over the years, it is very scoring. Hence if you choose a good subject chances of your selection go up several folds. There are certain things that should be kept in mind while selecting your Law optional subject. Your educational background matters the most in deciding your optional Law subject. Try to select those subjects that you have studied in your graduation days.As there are no breaks during UPSC mains exam. So select a subject that can be revised within a day. Some subjects are scoring in nature while others are not. Look at recent trends before you pick up a particular subject.Go to the website of UPSC, read the whole syllabus for the subject which you want to select. If you find it interesting go for it. Coming to the law as an optional subject, decide this depending upon above-mentioned facts. Law is a very scoring subject but also dynamic. You have to stay updated. remember lots of recent case laws etc.