You will be given a definition of a task first, then some input of the task.
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: The angular methods for evaluating the flow properties of pulverulent solids allow the determination of the angle of repose parameter. A mixture of pulverulent substances presents a good or optimum flow if the values of this parameter (in degrees) are:
Options: <0> Over 40 <1> Between 45 and 55 <2> Between 38 and 45. <3> Over 37 <4> Near or under 25
Output:
pharmacology