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 conception of person based on the idea that he is a being inseparably linked to his culture is developed in the care model of: 
 Options:  <0> M. E. Rogers. <1> N. J. Pender. <2> J. Watson. <3> M. Leininger. <4> M. K. Chisman and J. Riehl-Sisca.
answer:
nursery


question:
Question: The ribosomal subunits are formed in the: 
 Options:  <0> Nucleoplasm. <1> Nucleolus <2> Nuclear sheet. <3> Nuclear pore. <4> Cytoplasm.
answer:
biology


question:
Question: The action potential starts in the membrane of the initial segment of the axon by: 
 Options:  <0> Be the place where the synapse occurs. <1> Have a higher excitation threshold. <2> Present high concentration of voltage-dependent channels. <3> Present Na + channels regulated by ligand <4> Start there the axon myelin sheath.
answer:

biology