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 spontaneous process is characterized because: 
 Options:  <0> In isolated systems the entropy decreases (ΔS <0). <1> At constant pressure and temperature, the Gibbs energy decreases (ΔG <0). <2> At constant pressure and temperature, the Helmholtz energy decreases (ΔA <0). <3> At constant volume and temperature, the Gibbs energy increases (ΔG> 0). <4> It is reversible.

SOLUTION: pharmacology

PROBLEM: Question: What is the mechanism of action of octreotide ?: 
 Options:  <0> Serotonergic receptor 5-HT4 agonist. <1> Motilin receptor agonist. <2> Somatostatin receptor agonist. <3> Antagonist of the motilin receptor. <4> Somatostatin receptor antagonist.

SOLUTION: pharmacology

PROBLEM: Question: The color centers or F centers are produced: 
 Options:  <0> Exclusively in crystals that contain fluorine. <1> By heating a crystal in the vapor of an alkali metal. <2> By cooling a crystal in the vapor of an alkali metal. <3> By heating a crystal in the presence of fluorine. <4> By cooling a crystal in the presence of fluorine.

SOLUTION:
chemistry