All of the following are causes for inmate grievance except ___________.

Inmate grievances often arise from issues related to their treatment and their rights within the correctional facility. A violation of civil rights is a significant concern and directly contributes to many grievances, as inmates are entitled to certain protections under the law.

Criminal acts or prohibited acts can result in grievances, but typically these grievances would pertain to the enforcement of rules rather than a recognized cause for grievance since the action itself is a violation of institutional rules.

Unjust denials of privileges—such as access to recreational activities, programs, or communication with the outside world—also constitute valid causes for grievance as they affect inmates' rights to certain benefits while incarcerated.

On the other hand, the denial of privilege after a due process hearing indicates that an inmate was afforded the opportunity to contest the decision made against them. If a hearing was conducted properly, the outcome is considered justified based on the process that was followed. Therefore, this would not typically be a valid cause for grievance, as it implies that the inmate's rights to a fair hearing were upheld, barring any other significant procedural errors. This distinguishes it from the other options, which are based on immediate actions affecting inmates' rights without the procedural protections that due process provides.