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.
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Question: Question: When an experimental design is carried out, it is fundamentally sought: 
 Options:  <0> Know better the average of the results obtained and repeated in an experiment. <1> Know better the median of the results obtained in an experiment. <2> Identify better the factors that can affect the experiment. <3> To better identify the regression equations in an experiment. <4> To know better the standard deviation of the different data in the experiment.

Answer: chemistry


Question: Question: Generates hydrogen peroxide in the phagosome: 
 Options:  <0> Myeloperoxidase <1> Carbonic anhydrase. <2> NADPH oxidase. <3> Cytochrome C oxidase. <4> Superoxide dismutase.

Answer: biology


Question: Question: Why does carbenicillin have a low antibacterial activity by mouth ?: 
 Options:  <0> It is degraded by beta-lactamases in the digestive system. <1> He undergoes first-pass hepatic oxidative metabolism. <2> It binds covalently to plasma proteins. <3> It is decarboxylated in the acid medium of the stomach giving rise to benzylpenicillin, which is also unstable in that medium. <4> It is highly lipophilic, which is why it is not released correctly from oral administration forms.

Answer:
pharmacology