Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: The set of social mechanisms whose function is the transformation of specialized products in the form of health services for society, is called system: 
 Options:  <1> Sanitary. <2> Social. <3> Social insurance. <4> Liberal. <5> From the market
