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: One of the main concepts of Acceptance and Commitment Therapy is: 
 Options:  <1> The relativization of the context. <2> The underlying reason. <3> The experiential avoidance. <4> The resistance to change. <5> Emotional vulnerability
