Researchers conducted an experiment to show more than a dozen portraits of equally dressed children to a judging panel composed of doctors and teachers. The group members need to judge the children's intelligence based on the portrait photos. The results of subjective judgments will be compared with the results of objective intelligence tests. Finally, researchers have concluded that people can judge the individual's IQ based on their appearance. Which of the following, if true, would most weaken the conclusion? ["Hollywood's well-known movie stars are no shortage of high school graduates.", 'If a person is dignified, we may mistakenly think that he must be very intelligent.', 'According to the law of social homosexual mating, the intelligent gene and the beautiful gene will continue to optimize the combination.', 'Beautiful children can receive more intensive education, and their talents can be better developed.']