instruction:
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:
Question: In chronic bronchitis, it is characteristic: 
 Options:  <0> Destruction of alveolar walls. <1> Difficulty in the inspiratory flow. <2> Decrease in the volume of inspiratory reserve. <3> Elevation of capillary hydrostatic pressure. <4> Inflammation and mucosal hypersecretion of the respiratory tract.
answer:
pharmacology


question:
Question: The Grignard reagents attack the epoxides to give, after the appropriate hydrolysis: 
 Options:  <0> Carboxylic acids. <1> Cyclic amides. <2> Open aliphatic chains. <3> Open-chain alcohols. <4> Cyclic ethers.
answer:
pharmacology


question:
Question: Which of the following characteristics is NOT typical of the contents of obsessive ideas? 
 Options:  <0> Sexual thoughts <1> Phonemes <2> Need for symmetry. <3> Pathological doubt. <4> Pollution.
answer:

medicine