Chris: Murderers should be sentenced to life in prison, not subjected to the death penalty. A life sentence is enough to deter any convicted murderer from killing again. Moreover, even the worst offenders may subsequently undergo a miraculous rehabilitation—a possibility that is eliminated by the death penalty. The Bird Man of Alcatraz, a notorious convicted murderer, is a case in point. He raised canaries while in prison and ultimately became an acknowledged authority on the subject.
Dana: But the Bird Man of Alcatraz killed another inmate while in prison. What would you do to deter him from committing yet another murder—take away his birds?
Dana most seriously weakens Chris’s argument by doing which one of the following?
(A) making a personal attack on the Bird Man of Alcatraz
(B) giving a counterexample to the principle offered by Chris that life imprisonment is from killing again
(C) showing that it is unlikely that any convicted murderer could undergo a significant rehabilitation
(D) suggesting that Chris’s argument is based on an atypical case
(E) demonstrating that it is impossible to prevent a convicted murderer from committing another murder while in prison