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.

[EX Q]: Question: A rat pathogen that has fleas as vectors of transmission to humans is: 
 Options:  <0> Rickettsia rickettsii. <1> Yersinia pestis <2> Borrelia burgdorferi. <3> Ehrlichia ewingii. <4> Brucella abortus.
[EX A]: biology

[EX Q]: Question: The secretion of GH or growth hormone: 
 Options:  <0> It stops at 20 years old. <1> It last for ever. <2> During the day it is greater than at night. <3> It is stimulated by somatostatin. <4> It is stimulated by the substances.
[EX A]: biology

[EX Q]: Question: The control of vital signs is fundamental in the assessment of the neurological patient. Many neurological disorders can present alterations of the respiratory pattern or frequency, indicating damage to the respiratory center or the nervous system. One of these abnormal breathing patterns, present in meningitis or cases of supratentorial injury, is Cheyne-Stokes respiration, characterized by: 
 Options:  <0> Regular frequency and superficial character. <1> Absence of clearly observable breathing. <2> A series of breaths that increase in amplitude / intensity to a maximum point in which they begin to decrease, followed by an apnea pause. <3> Slow and regular breaths with a frequency less than 10 per minute. <4> It is an abnormal and sustained increase in both depth and respiratory rate.
[EX A]:
nursery