Which type of penitentiary system, developed in Pennsylvania required that each prison resident be held in isolation from other prison residents? A congregate system B separate confinement system C assembly system D segregated confinement system

The type of penitentiary system developed in Pennsylvania that required each prison resident to be held in isolation from other prison residents is the **B separate confinement system**. This system, also known as the Pennsylvania System, emphasized solitary confinement to encourage reflection and rehabilitation.