Option 1, "Autrefois acquit," refers to a legal principle that prevents a person from being tried again for the same offense after they have already been acquitted. This principle is based on the concept of double jeopardy and protects individuals from being subjected to multiple trials for the same crime.

Option 2, "Non bis in idem," is another legal principle related to double jeopardy. It refers to the principle that a person cannot be punished twice for the same offense. Once a person has been convicted or acquitted of a crime, they cannot be tried again for the same offense.

Option 3, "Autrefois convict," is also related to double jeopardy. It refers to the principle that a person cannot be convicted of a crime if they have already been convicted and punished for the same offense. This principle protects individuals from being subjected to multiple convictions and punishments for the same crime.

Option 4, "Audi Alteram Partem," is Latin for "hear the other side." This principle represents the maxim that no person shall be condemned unheard. It emphasizes the importance of ensuring that all parties involved in a legal dispute have the opportunity to present their case and be heard before a decision is made. This principle is essential for ensuring fairness and justice in legal proceedings.