He was sent to the prison for his …… A. sin B. vice C. crime D. guilt

The correct answer is C. crime.

A sin is an act that is considered morally wrong by a particular religion or society. A vice is a bad habit or addiction. Guilt is a feeling of responsibility or remorse for wrongdoing. A crime is an act that is punishable by law.

In this case, the man was sent to prison for his crime, which is an act that is punishable by law. The other options are not correct because they do not refer to acts that are punishable by law.