You will be given a definition of a task first, then some input of the task.
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'.

Question: The author who showed in her writings her interest in the control of the environment, as well as the importance of the influence of Nature in the health of the people is:
Options: <1> V. Henderson. <2> H. Peplau. <3> F. Nightingale. <4> M. Leininger. <5> D. Orem.
Output:
3