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.

Question: A teenager with obsessive-compulsive disorder phones the Toxicological Information Service to ask if he can safely use an insecticide for cockroaches. What is the name of this escape behavior? 
 Options:  <0> Ascertainment. <1> Rationalization. <2> Reinsurance. <3> Ritualization <4> Testing.
psychology

Question: The reactions in which the kinetics does not depend on the nucleophilic concentration, are reactions: 
 Options:  <0> Radicals <1> SN1. <2> Pericyclic. <3> SN2. <4> None of the above.
chemistry

Question: The use of intonation changes and emphasis to add meaning to speech is called: 
 Options:  <0> Alexitimia. <1> Tonality. <2> Rhythmicity <3> Melody. <4> Prosody.

psychology