According to critics of parole, why are there so many parole violations? select one: a. parole boards are releasing large groups of offenders. b. parole officers are not adequately supervising parolees. c. parole boards are imposing too many conditions on parolees. d. prisoners are not properly reintegrated into society.

I believe the answer is: Prisoners are not properly reintegrated into society.

In parole system, the convicted are not required to get into prisons as long as they follow the orders from parole officers. They would wear an electronic bracelet in their legs that would send signal to the officers if the convicts violate the officers' orders.