Subsection (1)(a) sets out the purposes for which temporary release may be granted by the Minister. These are to assess the person's ability to re-integrate into society upon such release; to prepare a person for release upon expiration of his or her sentence or upon his or her being discharged from prison; and, to enable a person to assist the Garda Síochána in the prevention, detection or investigation of offences or the apprehension of a person guilty of, or suspected of having committed, an offence. Paragraph (b) further provides that a person may be temporarily released where circumstances exist to justify the person's release on health grounds or on other humanitarian grounds. Paragraph (c) provides that a person may be temporarily released where, in the opinion of the Minister, the release is necessary or expedient to ensure good government of the prison concerned or to maintain good order and the humane and just management of the prison concerned. Finally, paragraph (d) provides that a person may be temporarily released if the Minister is of the opinion that the person has been rehabilitated and would be capable of reintegrating into society.