Which division is responsible for managing TDCJ's correctional institutions?

The Correctional Institutions Division is the appropriate choice because it is specifically tasked with the oversight and management of TDCJ's correctional facilities. This division focuses on ensuring the safe and secure operation of prisons and jails within the Texas Department of Criminal Justice. It handles various responsibilities, including facility operations, inmate management, and the implementation of programs designed to maintain order and rehabilitate offenders.

The other divisions mentioned have different focuses. The Community Supervision Division primarily manages probation and parole, aiming to supervise individuals in the community instead of within institutional settings. The Rehabilitation Division focuses on programs intended to improve inmates' skills and reintegration into society post-release. The Policy Division deals with the development and implementation of policies affecting the agency but does not directly manage correctional institutions. Understanding these distinctions clarifies why the Correctional Institutions Division is the appropriate answer.