When hypnotized subjects are told that they are deaf and are then asked whether they can hear the hypnotist, they reply, "No. " Some theorists try to explain this result by arguing that the selves of hypnotized subjects are dissociated into separate parts, and that the part that is deaf is dissociated from the part that replies. Which of the following challenges indicates the most serious weakness in the attempted explanation described above? ['Why does the part that replies not answer, "Yes"?', "Why do the subjects appear to accept the hypnotist's suggestion that they are deaf?", 'Why do hypnotized subjects all respond the same way in the situation described?', 'Why are the observed facts in need of any special explanation?']