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: In the psychological treatment of recurrent childhood nightmares:
Options: <0> The parents are trained to extinguish, ignoring them, the manifestations of anxiety of the child who has suffered a nightmare. <1> The main objective is to ensure the physical safety of the child. <2> Exposure techniques and systematic desensitization are considered well-established treatments. <3> The technique of review in imagination is the one that has received the greatest empirical support. <4> There are no studies about the therapeutic efficacy of hypnosis.
Solution: psychology