A prisoner consistently violated prison rules and often engaged in violent outbursts against the prison staff. One day, the prisoner punched a prison guard. Subsequently, the prisoner was charged with assault. Before the trial started, the judge ruled that evidence relating to the prisoner's history of violating the prison rules would be inadmissible at trial. During the trial, a fellow inmate testifying on behalf of the prisoner testified that the prisoner had a reputation for non-violence. In rebuttal, the prosecution sought to call the prison guard to testify about the prisoner's reputation for violence. Should the trial court permit the prison guard's proffered testimony

Adefendant charged with driving while intoxicated pleaded not guilty and insisted on a trial. right before the trial began, he fired his attorney and decided to defend himself. at one point during opening arguments, the defendant began to act like a cat, meowing and chasing an imaginary squirrel out of the courtroom. if no one else raises the issue of the defendant's competency to stand trial, what is the responsibility of the trial judge here? a) the trial judge has no responsibility, because the defendant decided to defend himself. b) the trial judge has no responsibility, because she cannot decide whether the defendant is competent to stand trial. c) the trial judge must raise the issue of competency, because the defendant is representinghimself.d) the trial judge must raise the issue of competency, because the constitution obligates her to do.