What does the grouping of offenders according to various factors like age and criminal record refer to?

The grouping of offenders based on factors such as age and criminal record is known as classification. This process involves assessing the individual characteristics of inmates to determine their risk levels, treatment needs, and appropriate placement within the correctional system. Classification is critical in managing the safety and security of both inmates and staff, ensuring that individuals are housed with others who have similar risks and rehabilitation needs.

The options provided do not specifically address the concept of classification in the context of offender grouping. "Custody" typically pertains to the level of control or supervision over an inmate, while "security" often relates to the measures taken to prevent escapes or maintain order. "Safe-keeping" is more concerned with the protection of inmates rather than their classification based on factors like age and criminal history. Since none of these terms accurately represent the process of grouping offenders as described, the most appropriate response is "None of these."