Probation (or parole) is the act of <em>releasing</em> an offender of the law from detention for <em>good behavior</em>, albeit <em>under supervision</em>. Parole revocation is the administrative act of putting that offender <em>back into detention</em> for <em>breaking the terms of their parole</em> (or probation).
He must exercise his option under the terms of the option contract. Illumination: Options are generally concerned with only two things: time and price. He must exercise his option under the terms of the option contract