The correct answer is D. refusing to testify against oneself in court.
According to the constitution, you don't have to incriminate yourself in the court of law and be a witness if you don't want to. Also, anything found in your house or similar that is not related in any way to the case cannot be used to prosecute you. Example of this was when p.ornography was found in the house of a suspect and she was accused of lewd behavior, even though it had nothing to do with the case that she was involved in.
