Amicus Curiae is a Latin term for "friend of the court." It refers to a person or group, not a party to an action, who is permitted by the court to submit a brief or argument on a point of law or fact. The role is to assist the court by offering information, expertise, or insight relevant to the issues in the case. Option C accurately describes this role as a neutral lawyer appointed by the court for assistance, especially in complex cases or those requiring specific expertise.