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'.

[Q]: Question: Indinavir is a selective inhibitor of HIV protease because: 
 Options:  <1> By hydrolysis, the active drug is generated. <2> Rents irreversibly the active center of the enzyme. <3> Its structure mimics the transition state of the reaction catalyzed by the enzyme. <4> It is a suicide inhibitor. <5> Its symmetric structure interacts effectively with the active center of the enzyme.
[A]: 3


[Q]: Question: What is the approach proposed by the relationship model between therapist and client as expert to expert ?: 
 Options:  <1> The behavioral model. <2> The constructivist perspective <3> The psychoanalysis. <4> The strategic school. <5> The therapy centered on the client.
[A]: 2


[Q]: Question: What author proposes that the structure and functions of the personality are organized in three levels: dispositional traits, personal interests or concerns and life history? 
 Options:  <1> Pelechano <2> Singer. <3> Coast. <4> McAdams. <5> Pervin.
[A]:
4