Which of the following is NOT considered a sign of impending violence?

The option that identifies a behavior that does not typically signal impending violence is the one about inmates making more phone calls than normal to home. Increased communication with family may indicate a desire for support or connection, potentially reflecting a more positive emotional state or an effort to maintain relationships rather than a precursor to violence.

In contrast, excessive silence among inmates can often signal distress or agitation, which may be a precursor to violent outbursts. Heightened agitation is a clear indicator of potential conflict, as it reflects increased emotional instability. Similarly, isolation can be a warning sign, as it might suggest that an inmate is in distress or planning harmful actions, indicating they might be disconnected from their usual support networks. These behaviors are typically associated with heightened tension and the potential for violence. Therefore, making more phone calls than usual is less likely to be an indicator of impending violence compared to the other behaviors described.