Given the task definition and input, reply with output. 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: Primary prevention:
Options: <0> It consists of avoiding the appearance or diminishing the probability of suffering from a certain disease. <1> It deals with the diagnosis and early treatment of the disease. <2> It acts when the disease has already been established but trying to delay its course. <3> It is aimed at identifying patients at risk of suffering unnecessary, unethical and unnecessarily invasive interventions. <4> The correct answers are 2 and 3.
nursery