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.

[Q]: Question: The gas used to generate the ICP plasma (coupled induction plasma) is:
Options: <0> Hydrogen for being diatomic, chemically inert and with a low ionization energy. <1> Oxygen because it is diatomic, highly reactive and with a high ionization energy. <2> Argon, being monatomic, chemically inert and with a high ionization energy. <3> Xenon, being monatomic, highly reactive and with a low ionization energy. <4> None of the above is correct, because the gas used is helium.
[A]: chemistry

[Q]: Question: Which of the following functions is not typical of the stomach?
Options: <0> Food storage. <1> Protein digestion. <2> Secretion of intrinsic factor. <3> Secretion of hormones <4> Amylase secretion.
[A]: pharmacology

[Q]: Question: What type of mechanism does Gestalt propose as an explanatory mechanism for solving a problem ?:
Options: <0> The trial and error. <1> The search for operations in the problem space. <2> The algorithmic methods. <3> The hueristicos methods. <4> The insight.
[A]:
psychology