Which component is NOT one of the three main parts of the criminal justice system?

The correct choice is that "Research and Analysis" is not one of the three main parts of the criminal justice system. The criminal justice system is predominantly comprised of three core components: law enforcement, the judiciary, and corrections.

Law enforcement encompasses the agencies and officers responsible for maintaining public order, enforcing laws, and preventing crime. The judicial component involves the courts, which interpret laws and administer justice through the trial process, including the prosecution and defense of criminal cases. Corrections refers to the system responsible for managing those who have been convicted of crimes, including jails, prisons, and rehabilitation programs.

While research and analysis play a significant role in studying and improving the criminal justice system, they do not constitute a foundational component in the way that the other three elements do. Therefore, this helps clarify that research and analysis support the system but are not part of its structural framework.