The rule of law refers to the principle that everyone, including individuals and government officials, is subject to and must follow the law. It implies that the law is supreme, and no one is above it, regardless of their status, wealth, or position. The rule of law also requires that the legal system be fair, impartial, and transparent in its application and that individuals have access to justice and legal remedies when their rights are violated. Therefore, option A, legality and impartiality, correctly describes the principle of the rule of law.