Which of the following is an example of a civil suit?
a. Fred believes he was fired unjustly, so he takes his former employer to court.
b. Joe shoots Fred. Prosecutors file murder charges against Fred.
c. Sgt. Fred Johnson is arrested by military police and charged with dereliction of duty. The case is tried before a military tribunal.
d. Fred Johnson was convicted of murder, but he appeals his conviction to the US Supreme Court.