The law firm of Sutherlin, Perez, and Associates is one of the most successful law firms whose primary specialization is in criminal defense cases. In fact, the firm has a better than 90 percent acquittal rate in such cases. Dalton is an attorney whose primary specialization is in divorce cases, so Dalton certainly cannot be a member of Sutherlin, Perez, and Associates. The reasoning in the argument is flawed because the argument ['states a generalization based on a selection that is not representative of the group about which the generalization is supposed to hold true', 'takes a high rate of success among the members of a group to indicate that the successes are evenly spread among the members', 'concludes that someone is not a member of a group on the grounds that that person does not have a characteristic that the group as a whole has', 'offers in support of its conclusion pieces of evidence that are mutually contradictory']