Which of the following is not identified as a preventive measure that can directly affect escape attempts?

• A. Conducting constant surveillance
• B. Keeping an unpredictable schedule
• C. Using mobile or stationary posts
• D. Installing metal detectors

Answer: (D)

The key idea is which actions directly disrupt or deter an inmate’s ability to carry out an escape. Constant surveillance directly limits opportunities to move or act unnoticed, making it hard for an escape attempt to unfold without detection. An unpredictable schedule disrupts the planning process because inmates can’t anticipate when guards will be watching or when routines change, increasing the chance of being caught off guard. Using mobile or stationary posts creates flexible, responsive coverage that can intercept suspicious behavior at critical points, further reducing the likelihood of an escape being successful.

Installing metal detectors, while important for preventing contraband from entering or being moved around the facility, does not directly stop an escape attempt from being executed. It helps reduce tools or weapons that could be used in an escape, but it’s not a direct preventive measure on the act of escaping itself.