A researcher studying drug addicts found that, on average, they tend to manipulate other people a great deal more than nonaddicts do. The researcher concluded that people who frequently manipulate other people are likely to become addicts.
Which of the following, if true, most seriously weakens the researcher's conclusion?
-
AAfter becoming addicted to drugs, drug addicts learn to manipulate other people as a way of obtaining drugs.
分析该选项
-
BWhen they are imprisoned, drug addicts often use their ability to manipulate other people to obtain better living conditions.
分析该选项
-
CSome nonaddicts manipulate other people more than some addicts do.
分析该选项
-
DPeople who are likely to become addicts exhibit unusual behavior patterns other than frequent manipulation of other people.
分析该选项
-
EThe addicts that the researcher studied were often unsuccessful in obtaining what they wanted when they manipulated other people.
分析该选项
显示答案
正确答案: A