D. It prevents a person from being tried twice for the same crime if the person is found not guilty.
The Double Jeopardy Clause in the Fifth Amendment to the US Constitution prohibits anyone from being prosecuted twice for substantially the same crime. The Fifth Amendment also protects individuals against double jeopardy, a process that subjects a suspect to prosecution twice for the same criminal act. No one who has been acquitted (found not guilty) of a crime can be prosecuted again for that crime.
