Final answer:
The 'lock 'em up approach' to sentencing is known as incapacitation, which aims to prevent future crimes by removing criminals from the community.
Step-by-step explanation:
The goal of sentencing sometimes referred to as the 'lock 'em up approach' is incapacitation. This approach attempts to prevent future crimes by physically removing criminals from society through imprisonment or other means.
While not one of the choices provided, incapacitation is closest to option c) retribution, which focuses on punishing individuals for their past crimes but does not explicitly remove criminals from society to prevent further crimes.
The other approaches mentioned such as rehabilitation, restitution, and deterrence focus on transforming offenders, compensating victims, and discouraging potential criminal acts, respectively.