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'.

Ex Input:
Question: The probability that a person free of a disease develops it during a period of time, corresponds to: 
 Options:  <1> Chance. <2> Prevalence <3> Specificity <4> Forecast. <5> Risk.

Ex Output:
5


Ex Input:
Question: The denaturation of proteins: 
 Options:  <1> It is accompanied by the loss of their activity. <2> It supposes the rupture of peptide bonds. <3> It is always an irreversible process. <4> Alter its primary structure. <5> It is carried out by chaperone proteins.

Ex Output:
1


Ex Input:
Question: The basis of Watson's theory is the nurse practice focused on: 
 Options:  <1> The 10 fundamental needs. <2> The 10 factors of care. <3> The 8 self-care requirements. <4> The 4 modes of adaptation. <5> The 21 nursing problems.

Ex Output:

2