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: The term that includes the changes of the endometrium during pregnancy is: 
 Options:  <0> Hatching. <1> Apposition. <2> Accession. <3> Invasion. <4> Decidualization.

A: biology
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Q: Question: The concept of latent scheme in the cognitive theory of depression by Aaron Beck means that they are cognitive schemes: 
 Options:  <0> Of which the individual is not aware. <1> That directly influence the mood in a continuous but subtle way. <2> They are not permanently activated in vulnerable individuals and are activated only in the face of specific stressors. <3> They are active permanently but with an intensity that increases in each relapse or recurrence. <4> That do not require mental effort for its activation.

A: psychology
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Q: Question: Relating to topoisomerases: 
 Options:  <0> They are enzymes that convert the D-amino acids into L-amino acids. <1> They are enzymes that synthesize DNA. <2> They are enzymes that participate in the union of the subunits of the ribosome. <3> They are enzymes that denature DNA. <4> DNA gyrase is a special toposiomerase.

A:
chemistry
****