Correct Response: C. The primary role of the grand jury in the U.S. judicial system is to review evidence presented by a prosecutor to determine whether there is probable cause in a criminal case to bring an indictment and take the case to trial. Judges, not grand juries, issue warrants for arrests or searches and seizures (A). Likewise, judges are generally responsible for sentencing defendants who have been found guilty of crimes (B), while prosecuting attorneys and defense lawyers normally arrange plea-bargaining agreements (D).