What is the main object behind preventive theory?
To transform the criminal, either permanently or temporarily.
Doesn’t involve moral or humanitarian ground.
The idea is to being the criminals back into the society after reformation
It also deters the criminal from committing the same crime again.
The preventive theory of punishment seeks to prevent further crimes being committed, which is done through disabling the criminal, mostly through imprisonment. The idea is to keep the offender away from the society so that he/she does not commit the same crime again, or even a different one. Hence the correct answer is a.