Task: Question Answering
Input (English): Question: In the field of mental health, the word chronicity: 
 Options:  <1> It is not used in relation to mental disorders. <2> It is replaced by the term Serious Mental Disorder (TMG). <3> It began to be used with psychiatric reform. <4> It is related to acute mental illness. <5> It is a neutral concept, without negative connotations.
Output (English): 2