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: Which modality of the Behavioral Approach Test (PAC) is the most appropriate to assess the phobia of darkness in childhood ?: 
 Options:  <1> Active approach. <2> Passive exposure. <3> Passive approach. <4> Successive approximation. <5> Active exhibition.
