Task: Text Categorization
Input (English): 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.
Output (English): psychology