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: Which were the first authors who investigated the role that stressful life events could have on health ?:
Options: <0> Mechanic <1> Matarazzo <2> Zola <3> Lazarus <4> Holmes and Rahe.

Answer: psychology

Question: Question: Becker muscular dystrophy is an alteration of:
Options: <0> The skeletal muscle. <1> The metabolism of lipids. <2> The bones. <3> Hepatic origin. <4> The bilirubin.

Answer: pharmacology

Question: Question: Azidothymidine (AZT) used against the human immunodeficiency virus:
Options: <0> It binds to the cellular RNA polymerase and blocks transcription. <1> It binds to the early promoter of the virus and prevents its recognition by RNA polymerase. <2> Antagonizes the phosphorylation of nucleosides, thus inhibiting the synthesis of viral DNA. <3> Blocks the transport of thymidine to the cellular interior. <4> Inhibits transcriptase

Answer:
biology