Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: On what model are the intervention programs most successful in the early treatment of childhood autism based? 
 Options:  <1> In the applied analysis of behavior. <2> In the neomediational behaviorism. <3> In the theory of social learning. <4> In Lacanian psychoanalysis. <5> In the theory of attachment.
