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'.

Example Input: 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.
Example Output: 2

Example Input: Question: What is cardiac output? 
 Options:  <1> The volume of blood that leaves the heart per unit of time (ml / min or l / min). <2> The complete heartbeat constituted by contraction (systole) and relaxation (diastole) in both atria and in both ventricles measured in time (sec). <3> The blood that remains in the heart when the pressure gradient determines the distension of the cardiac fibers. <4> The power gradient of the contraction, also called contractility. <5> The ventricular volume that remains constant.
Example Output: 1

Example Input: Question: In relation to the process of formation of impressions, what does the phenomenon of Perceptual Defense refer to? 
 Options:  <1> Low threshold to perceive threatening stimuli. <2> Low threshold of recognition before stimuli that satisfy our needs. <3> High threshold to perceive threatening stimuli. <4> High threshold of recognition before positive stimuli. <5> Low threshold to perceive both negative and positive stimuli.
Example Output:
3