Prison officers have a myriad of ways of retaliating against troublesome inmates,short of writing tickets for rule violations.These are termed forms of ______ control.

A) governmental
B) social
C) informal
D) formal

The term "informal control" refers to unofficial ways in which prison staff exert power and control over inmates, often through intimidation and coercion. This can include things like withholding privileges or manipulating access to resources, and is distinct from formal control, which involves enforcing established rules and regulations through official channels.