A trial jury, also known as a petit jury, is a group of citizens selected to hear evidence in a legal case and make a decision based on that evidence. Typically consisting of 6 to 12 members, the jury listens to testimonies, reviews evidence, and deliberates to reach a verdict. Their primary role is to determine the facts of the case and apply the law as instructed by the judge. In criminal cases, a trial jury decides whether the defendant is guilty or not guilty, while in civil cases, they determine liability and damages. The right to a trial by jury is a fundamental aspect of the legal system in many countries, including the United States, where it is protected by the Sixth Amendment.