Which aspect of the legal system ensures individuals are aware that they won’t be prosecuted for obeying existing laws?

The non-retrospective nature of law is the correct answer because it refers to the principle that individuals cannot be prosecuted for actions that were legal at the time they were conducted. This aspect of the legal system provides assurance to citizens that they will not face legal consequences for obedience to existing laws, reinforcing the stability and predictability of the legal system.

Legal certainty, while related, primarily focuses on the clarity and predictability of laws themselves rather than individual protection from prosecution for past actions. Legal representation pertains to the right of individuals to have legal assistance in court, ensuring they are defended adequately but does not specifically address the issue of prosecution for actions taken under laws at the time they were in force. Judicial review involves the scrutiny of public authorities’ decisions and does not directly ensure that individuals are aware of their legal rights concerning compliance with existing laws.