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 strict vegetarians, a lack of one of the following vitamins may appear:
Options: <0> B12 vitamin. <1> Vitamin C. <2> Retinol <3> Folate <4> Niacin

A: nursery
****
Q: Question: In the synthesis of DNA, the quinolones act:
Options: <0> Joining the double helix and thus blocking the progress of the replication fork. <1> Interlacing in the double helix and thus causing errors in the transcription. <2> On DNA gyrase. <3> As nucleotide analogs that are incorporated into DNA. <4> About DNA polymerases.

A: biology
****
Q: Question: Point out the correct answer regarding therapy for Rehm's depression:
Options: <0> It focuses on three processes: self-tracking, self-esteem and self-reinforcement. <1> It has no empirical evidence to be considered well-established treatment. <2> Each of its components separately have been shown to be as effective as the complete treatment. <3> It presents a strong cognitive component. <4> It has been shown superior to interpersonal therapy and problem solving.

A:
psychology
****