A survey of a group of young smokers in area Y found that adolescents from second-hand smoke families and at least one parent were smokers. Therefore, if the number of second-hand smoke families in the area can be significantly reduced, the number of new smokers will be significantly reduced. Which of the following, if true, would best support the above argument? ['Quit smoking methods for adults and teens.', 'Smoking adolescents can quit smoking through active intervention.', 'Adults and adolescents learn to smoke in the same way.', 'Y area has a higher percentage of young people smoking in second-hand smoke families than other families.']