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'.

[EX Q]: Question: A biosensor consists of: 
 Options:  <1> A receiver, a transducer, and an enzymatic brand. <2> A receptor and an enzymatic brand. <3> A transducer and an enzymatic brand. <4> A receiver and a transducer. <5> A receptor and an antibody.
[EX A]: 4

[EX Q]: Question: Under the name of xanthines are grouped: 
 Options:  <1> The coca leaf, cocaine and crack. <2> Methadone and heroin <3> The MDA and the MDMA. <4> Nicotine and inhalants. <5> Caffeine and theophylline.
[EX A]: 5

[EX Q]: Question: Patients with schizophrenia usually present the so-called interactive imbalance that is expressed in the conversation with an exaggerated response latency, minimal speech or lack of participation in it. What is the most appropriate method to evaluate the patient and decide if it is convenient to perform a Social skills training ?: 
 Options:  <1> Through scales of intelligence. <2> Through self-report techniques: scales of social functioning. <3> By measuring electrodermal activity and other psychophysiological measures. <4> Through behavioral testing in simulated situations. <5> Through questionnaires and inventories of personality traits.
[EX A]:
4