A is right. Since the deaf part and the replying part are dissociated from each other, we can deduce the part that replies is not deaf. Thus, when answering the question "Can you hear me?", they should reply "Yes!"
D is wrong because if the hearing part and the deaft part are separated, all subjects can give a uniformed answer to the same question. This is in accordance to the theorist hypothesis. For example, if they all answer "Yes," the hypothesis holds. So the fact that the answers are uniformed does not weaken the argument
-- by 会员 sdcar2010 (2012/1/29 12:05:39)