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: What is the common denominator of well-established psychological treatments for childhood phobias ?: 
 Options:  <1> The change of beliefs regarding the dangerousness of the phobic stimulus. <2> The induction of a feeling of relaxation or well-being in the presence of the phobic stimulus. <3> The interaction of the therapist with the phobic stimulus. <4> The use of coping self-instructions. <5> The gradual relationship in vivo with the phobic stimulus.
