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.

Q: Question: In the training in HHSS applied to social phobia, modeling is used for the learning of certain skills. The chosen model must be: 
 Options:  <0> Very competent and keep that competition constant throughout the training. <1> Be relatively competent (a little more than the subject you train) and increase the competition throughout the training. <2> Be very competent and decrease your competence. <3> Being incompetent so that the patient can identify with him. <4> Must be a little more competent than the patient and not progress so that as the learning progresses the patient will overcome and increase their motivation.

A: psychology
****
Q: Question: Mrs. H. H. 69 years old complains that she does not sleep well. Regarding sleep in the elderly, it has been proven that: 
 Options:  <0> The non-pharmacological approach to insomnia has proved ineffective in this population. <1> The aging process is one of the main causes of insomnia. <2> They have a worse quality sleep, more fragmented and with early awakenings. <3> For the treatment of insomnia, the benzodiazepines of long half-life are those with the least side effect. <4> All hypnotics have the same side effects in the elderly.

A: nursery
****
Q: Question: With the same affinity of its Fab, the avidity is: 
 Options:  <0> IgM <1> IgE <2> IgA <3> IgG <4> IgD.

A:
biology
****