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: Esters can be obtained from carboxylic acids and alcohols, by applying the Fischer esterification reaction in which:
Options: <0> A base is used as a catalyst. <1> A ketone is used as the solvent. <2> A reducing reagent is used. <3> An oxidizing agent is used. <4> Acid catalysis is used.

Answer: pharmacology

Question: Question: Among the specific objectives that have been developed in order to make a health education intervention, aimed at providing people 65 years and older with the incorporation of preventive activities for heat stroke in daily self-care, identify the one that is INCORRECTLY formulated:
Options: <0> Teach people of 65 and older the signs and symptoms of heat stroke, during the first two sessions, of the total 10. <1> Select the relevant footwear-dress to use during the hot season in the place of residence, at the end of the 3rd session. <2> Enunciate the activities that are most done every day and that are influenced by excess heat, at the end of all sessions. <3> Point to a list of 15 foods, which facilitate body hydration, at the end of the 2nd session and with a maximum of 3 errors. <4> Argue each of the actions that must be done when a heat stroke occurs, one week after the end of the intervention.

Answer: nursery

Question: Question: Indicate the amino acid that, under physiological conditions, has an uncharged side chain:
Options: <0> Arginine <1> Aspartic acid. <2> Glutamic acid. <3> Lysine <4> Threonine

Answer:
chemistry