What major reform elements continued to exist in prisons from the 60s and 70s?

The correct choice highlights the significant changes that took place in the correctional system during the 1960s and 70s, specifically regarding the physical structure and operation of prisons. This period saw an ongoing movement away from the older, punitive "big block" prison designs, which often emphasized confinement over rehabilitation. In contrast, reform efforts during these decades advocated for the transformation of these facilities into more structured correctional institutions.

These reform elements included creating environments that would focus on rehabilitation, vocational training, and educational opportunities for inmates, rather than solely on punitive measures. The shift aimed to prepare inmates for reintegration into society, promote positive behavior, and reduce recidivism rates. Therefore, the transformation into correctional institutions represented a critical aspect of the broader reform movement aimed at addressing the issues within the prison system during that era.