Detailed Instructions: 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: The enantiomers of a molecule are:
Options: <0> Very different in all its chemical and physical properties. <1> Superimposed mirror images. <2> Distinguishable by their optical activity. <3> The result of the cyclization of a molecule in different positions. <4> Interconvertible without rupture of covalent bonds.
Solution:
biology