Which of the following is a major role of corrections in the justice system?

A major role of corrections in the justice system is supervising individuals under probation or parole. This function is crucial as it involves managing offenders who have been granted early release from incarceration or those who are serving their sentences in the community. Supervision ensures that individuals comply with the terms of their probation or parole, which may include regular check-ins, drug testing, and participation in rehabilitation programs. This role helps ensure public safety, supports the reintegration of offenders into society, and decreases the likelihood of re-offense.

The other options focus on different aspects of the justice system. Conducting trials is primarily the responsibility of the judiciary, where judges and juries examine legal cases. Deciding judicial precedents falls within the realm of the courts as well; this involves interpretation of laws and previous rulings that guide future cases. Legislating new criminal laws is a responsibility of the legislative branch, where elected officials create and modify laws based on societal needs and legal principles. Thus, the correct response highlights the unique and essential function of corrections in overseeing rehabilitation and compliance within the justice framework.