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.

[EX Q]: Question: They are involved in the lytic action of cytotoxic T lymphocytes: 
 Options:  <0> Granzimas <1> Opsonins. <2> Histamines <3> Integrins <4> Cathepsins.
[EX A]: biology

[EX Q]: Question: The Code of Ethics of Spanish Nursing: 
 Options:  <0> It constitutes the minimum standards of action for Nursing. <1> It is a deontological Ethics of maximums for Nursing. <2> It is a bridge between patrimonial and collegial responsibility. <3> It is a set of guidelines for professional practice. <4> It addresses the guidelines for proper assistance to the sick.
[EX A]: nursery

[EX Q]: Question: Beliefs and values, according to the psychology of personality: 
 Options:  <0> Once established, they do not experience changes during the rest of the individual's life. <1> They direct the person towards transcendence, according to Maslow's motivational proposal. <2> They predispose the person to prefer some modes of behavior over others. <3> They impel people towards the defense of human rights. <4> They encourage group development in the face of individual development.
[EX A]:
psychology