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 content validity of an evaluation instrument refers to: 
 Options:  <0> The evidence obtained by factor analysis. <1> The concurrence of measures. <2> The adequacy in the establishment of inferences. <3> The relevance and representativeness of its items. <4> The significant relationships with other measures.
psychology

Question: Which of the following molecules has at least a 90º angle ?: 
 Options:  <0> H2O. <1> NH3. <2> CH4 <3> SF4. <4> BF3.
pharmacology

Question: The number 0.0670 has: 
 Options:  <0> 5 significant figures. <1> 4 significant figures. <2> 3 significant figures. <3> 2 significant figures. <4> 1 significant figure.

chemistry