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: A cyclic voltammetry:
Options: <0> It is based on a stationary broadcasting regime. <1> It uses macroelectrodes as working electrodes. <2> He never needs a potentiostatic system. <3> It is always done in a non-agitated solution. <4> It uses a square wave potential format as an excitation system.

SOLUTION: chemistry

PROBLEM: Question: What element plays a physiological role in the prevention of gastroesophageal reflux?
Options: <0> Upper esophageal sphincter <1> Angle of His. <2> Hernia of Hiato. <3> Purkinje angle. <4> Pyloric sphincter

SOLUTION: pharmacology

PROBLEM: Question: What WISC IV tests are part of the perceptual reasoning index ?:
Options: <0> Search for symbols, cubes and digits. <1> Matrices, cubes and concepts. <2> Search for symbols, letters and numbers, and concepts. <3> Matrices, keys and concepts. <4> Cubes, letters and numbers, and concepts.

SOLUTION:
psychology