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 Pearson correlation coefficient indicates that there is a statistical association between two variables when:
Options: <0> Its value is positive. <1> Its value is between -1 (minus one) and 1 (one). <2> Its value approaches zero. <3> Its value is equal or very similar to the sample size used for its calculation. <4> Its value approaches its possible extreme values, -1 (minus one) or 1 (one).
medicine