In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
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Question: Question: In relation to the physiology of the complement system, one of the following statements is false: 
 Options:  <0> Most of its components are inactive. <1> Its mode of activation is similar to the coagulation cascade. <2> It is subject to strict control of regulatory mechanisms. <3> It is only activated by two different routes: the classical and the alternative. <4> During its activation, multimolecular complexes are formed.

Answer: pharmacology


Question: Question: For what purpose is the muscle tension technique applied in the treatment of blood phobia used ?: 
 Options:  <0> As a relaxation technique. <1> To divert the patient's attention from the feared stimulus. <2> To accelerate the habituation process. <3> To reduce vasovagal symptoms. <4> It is used in the first sessions to reduce anticipatory anxiety.

Answer: psychology


Question: Question: One of the most effective techniques included in psychological intervention programs for primary female orgasmic dysfunction is: 
 Options:  <0> Vacuum therapy <1> The exhibition in imagination. <2> The pubococcygeus muscle training. <3> The systematic desensitization. <4> The stop and start technique.

Answer:
psychology