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.
Example: Question: A distension is defined as:
Options: <0> Soft tissue injury. <1> Forced movement of abrupt production. <2> Injury by stretching a muscle. <3> Injury of the joint capsule. <4> Interruption in the continuity of a bone.
Example solution: nursery
Example explanation: Distension means Bloating and swelling in the belly area. It does not have much to do with chemistry, psychology, pharmacology, biology and medicine. Hence, the correct topic is nursery.

Problem: Question: One of the main limitations of the behavioral treatment (exposure with prevention of response) of OCD is:
Options: <0> His recent appearance. <1> The reduced efficacy compared to cognitive and pharmacological treatments. <2> The lack of an explanatory theoretical model. <3> The difficulty of application in cases of motor rituals. <4> The existence of a relevant percentage of patients who reject treatment because of its aversive nature.
Solution: psychology