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: Acetylsalicylic acid is a compound whose pKa is 3.5. What percentage of a dose of this product can be absorbed in the stomach fasting (pH 1.5)? 
 Options:  <0> Less than 10% <1> Between 10% and 20%. <2> More than 90% <3> Between 20% and 40%. <4> 50%
pharmacology

Question: The simultaneous expression of IgM and IgD is observed for the first time in lymphocytes: 
 Options:  <0> Early Pro-B. <1> B mature. <2> Late Pro-B. <3> Pre-B. <4> B immature
biology

Question: The response trend is an important source of error that diminishes the quality of: 
 Options:  <0> Projective techniques. <1> The semi-structured interview. <2> The methodology of the Observation. <3> The Self-reports. <4> The Objective Techniques.

psychology