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 p-nitrobenzoic acid is: 
 Options:  <0> Less acid than benzoic acid. <1> Less acid than p-methoxybenzoic acid. <2> More acid than benzoic acid and with lower pKa. <3> More acid than benzoic acid and with higher pKa. <4> Less acid than p-methoxybenzoic acid and with lower pKa.
pharmacology

Question: What are the leaders of the Structural / Strategic School of Systemic Therapy? 
 Options:  <0> O'Hanlon and Weiner-Davis. <1> Haley and Minuchin. <2> Weakland and Fisch. <3> Keeney and Ross. <4> Stierlin and Weber.
psychology

Question: A health professional is exempted from the obligation of professional secrecy in the following circumstance: 
 Options:  <0> Presence of an infectious disease. <1> Suicide attempt. <2> Refusal of the patient to avoid contagion to other people. <3> Suspicion of mistreatment. <4> Upon the request of a lawyer.

nursery