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: In relation to the administration of non-opioid analgesics, the recommendations listed below must be considered, EXCEPT: 
 Options:  <0> Do not administer acetylsalicylic acid to children or adolescents. <1> Take the medication with food and plenty of fluids to prevent gastric discomfort. <2> Report a history of bleeding disorders. <3> Adjust the dosage in 600 mg / 24 hours. <4> Keep appointments scheduled for kidney and liver function tests.
[A]: nursery


[Q]: Question: About free radicals: 
 Options:  <0> They are compounds that contain two or three unpaired electrons in an outer orbital. <1> Reactive oxygen species (ROS) in the cell are only generated enzymatically. <2> Hydrogen peroxide is the most damaging radical in the cell. <3> The hydroxyl radical originates non-enzymatically (Heber-Weiss reaction) and damages proteins and DNA. <4> Oxygen is a triradical.
[A]: chemistry


[Q]: Question: What kind of validity does the degree of confidence refer to, with which it can be inferred that the cause-effect relationships between the variables of an investigation are interpretable in the sense suggested by the researcher? 
 Options:  <0> Internal validity <1> External validity <2> Discriminant validity <3> Ecological validity <4> Construct validity
[A]:
psychology