TASK DEFINITION: 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.
PROBLEM: Question: Which were the first authors who investigated the role that stressful life events could have on health ?: 
 Options:  <0> Mechanic <1> Matarazzo <2> Zola <3> Lazarus <4> Holmes and Rahe.

SOLUTION: psychology

PROBLEM: Question: Which gene is most frequently associated with acquired mutations in breast cancer? 
 Options:  <0> p53. <1> PTEN. <2> BRCA-2. <3> BRCA-1. <4> Her2 / neu.

SOLUTION: medicine

PROBLEM: Question: Why do ovarian cycles not appear in nursing mothers for several months after birth ?: 
 Options:  <0> For stress and lack of sleep associated with breastfeeding. <1> Because there are low levels of FSH and LH. <2> Because there are high levels of oxytocin. <3> By saving iron that is derived from breastfeeding. <4> Because there are high levels of progesterone.

SOLUTION:
pharmacology