Which of the following is a safeguard against being kept in jail unlawfully?

A. bill of attainder

B. ex post facto law

C. the Fourteenth Amendment

D. writ of habeas corpus

Answer: D.) writ of habeas corpus

Explanation: The writ of habeas corpus simply means a legal order which is capable of challenging unlawful detention of an individual in jail. The writ involves that an arrested or accused individual be presented before the court in other to preside over the individual's alleged offense and then rule whether guilty and not, rather than unlawfully remanding such individual in a jail without trial. Therefore the writ of habeas corpus can be used to seek recourse from unlawful detention in prison.