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'.
Q: Question: If I propose to a friend to solve a problem like the tower in Hanoi, I will be proposing a problem of:
Options: <1> Transformation. <2> Induction of structures. <3> Ordination. <4> Social relationships. <5> Complex analogies
A:
1