instruction:
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:
Question: The reaction of 3-nitrobenzaldehyde with NaBH 4 in aqueous methanol gives: 
 Options:  <0> 3-Aminobenzaldehyde. <1> 3-nitrobenzoic acid. <2> 1-Methyl-3-nitrobenzene. <3> 3-Nitrobenzoate sodium. <4> (3-Nitrophenyl) methanol.
answer:
chemistry


question:
Question: In relation to the physiology of the complement system, one of the following statements is false: 
 Options:  <0> Most of its components are inactive. <1> Its mode of activation is similar to the coagulation cascade. <2> It is subject to strict control of regulatory mechanisms. <3> It is only activated by two different routes: the classical and the alternative. <4> During its activation, multimolecular complexes are formed.
answer:
pharmacology


question:
Question: In the nurse's instruction on home care in peritoneal dialysis, the patient or caregiver should be able to: 
 Options:  <0> Mention the basic principles of aseptic technique. <1> Analyze restrictions on food. <2> Demonstrate the procedure to add medication to the dialysis solution. <3> Describe the actions in case of emergency. <4> All the previous answers are correct.
answer:

nursery