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.
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Question: Question: At what stage is the person when they begin to balance the positive and negative consequences of drug use and, as a result, begin to consider stopping consumption, but basically maintain their ambivalence in this decisional balance? 
 Options:  <0> Stadium of action. <1> Contemplation stadium. <2> Relapse stadium. <3> Pre-contemplation stadium. <4> Post-relapse stadium.

Answer: psychology


Question: Question: Which of the following actions does insulin exert on liver tissue? 
 Options:  <0> It inhibits the uptake of glucose. <1> Activates lipolysis. <2> Inhibits the synthesis of fatty acids. <3> Activates glycogen synthesis. <4> Activates glycogenolysis.

Answer: pharmacology


Question: Question: Which of the following reactions of drug metabolism has an oxidation reaction as an intermediate step ?: 
 Options:  <0> The transformation of a nitro group (for example, the one existing in nitrofurantoin) into amino. <1> The O-demethylation of an ether (for example, the transformation of codeine into morphine). <2> The breaking down of a diazo group to originate an amine (for example, the transformation of Prontosilrubrum into sulfanilamide. <3> The transformation of oxazepam in its glucuronide. <4> The transformation of acetylcholine into choline.

Answer:
pharmacology