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: 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.
psychology

Question: The hepatic synthesis of methionine from homocysteine ​​requires: 
 Options:  <0> Methylmalonyl-CoA mutase. <1> Methylcobalamin. <2> 5'-Adenosilcobalamin. <3> Coenzyme B6. <4> Methionine adenosyl transferase.
chemistry

Question: African trypanosomes (T. Rhodesiense and T. Gambiense) are transmitted by insects of the genus: 
 Options:  <0> Glossina <1> Triatoma. <2> Panstrongylus. <3> Rhodnius. <4> Phlebotomus.

biology