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.

Question: The reactivity of various carbonyl groups is determined by their relative stability. The order of reactivity towards nucleophiles is: 
 Options:  <0> Amides> Esters> Ketones> Aldehydes. <1> Aldehydes> Ketones> Esters> Amides. <2> Amides> Ketones> Aldehydes> Esters. <3> Aldehydes> Esters> Ketones> Amides. <4> Amides> Ketones> Esters> Aldehydes.
chemistry

Question: Which of the following is a more reliable marker of malnutrition in the elderly patient? 
 Options:  <0> Weight loss of 1 kg in the last month. <1> Body mass index greater than 24. <2> Difficulty swallowing, chewing and / or lack of appetite. <3> Albumin 4.5 gr / dl. <4> Mini Nutritional Assessment less than 17.
medicine

Question: The best strategy to provide information to patients with cancer is: 
 Options:  <0> Do not inform them so that the patient does not despair. <1> Give them all the possible information to reduce to the maximum the uncertainty that the situation causes. <2> Focus exclusively on providing information relevant to the aspects directly linked to the disease. <3> Adapt the information to the informative demands of the patients. <4> Limit to offering information to family members so they can provide it at the right time to the patient.

psychology