Explanation
Judicial custody implies C: Sending to jail.
Judicial custody is a term used in legal and criminal justice systems to refer to the period of time when an accused person is held in custody in prison or jail, as per the orders of a judicial authority, such as a judge or magistrate. During this time, the accused is not allowed to leave the prison or jail and is kept in the custody of the authorities.
Option A, "Judicial protection," is not an accurate definition of judicial custody, as it implies a more positive connotation. Option B, "Court protection," is also not an accurate definition of judicial custody, as it implies a protective measure taken by the court, which is not always the case. Option D, "Sending to lockup," is a similar term to judicial custody, but lockup generally refers to a temporary holding cell or facility, whereas judicial custody refers to a longer-term imprisonment period.
Therefore, option C, "Sending to jail," is the most accurate definition of judicial custody.