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.

Question: Which compound acts as a sulfhydryl buffer and as an antioxidant? 
 Options:  <0> Glycogen <1> Glutamic acid. <2> Glucagon. <3> Glutathione <4> Ascorbic acid.
chemistry

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.
psychology

Question: Pyridazine is an aromatic heterocycle that contains in its structure: 
 Options:  <0> A nitrogen <1> Two nitrogens <2> Three nitrogens <3> Four nitrogens <4> No nitrogen

chemistry