The study design says that we are required to know a recent and recommended reform for cost, time and cultural factors for criminal, and cost, time and accessibility factors for civil. Therefore, if you want to play it safe, you should know one recent and one recommended reform for each. (Because worst case scenario, the exam can ask for students to write about a recommended reform addressing time, for example). However, imo, I believe it is more likely a question will ask us to refer to a recent and/or recommended reform in relation to the criminal/civil justice system, so if you're feeling pushed for time in terms of learning content, I'd say learning one-two recent and recommended reforms for both the criminal and civil justice system as a whole should be sufficient. No guarantee though, unfortunately.