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.

[EX Q]: Question: The delirious atmosphere is defined as: 
 Options:  <0> The delirious interpretation of a normal perception. <1> A self-referential idea, of great importance for the patient. <2> Subjective experience that the world has changed in a subtle but sinister, disturbing and difficult or impossible to define way. <3> The delirious construction of a memory. <4> A rational and easily modifiable idea about an environmental issue.
[EX A]: psychology

[EX Q]: Question: The thromboxanes: 
 Options:  <0> They induce platelet aggregation. <1> They inhibit platelet aggregation. <2> They act as bronchodilators in the respiratory system. <3> They are produced in the membranes of all cells. <4> They are derived from saturated fatty acids.
[EX A]: chemistry

[EX Q]: Question: In the treatment of alcoholism, what is Exposure Therapy based on the behavior of drinking? 
 Options:  <0> In the Respondent Conditioning. <1> In operant conditioning. <2> In social learning. <3> In the Saciation. <4> In Cognitive Reatribution.
[EX A]:
psychology