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 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.
5

Question: A 30-year-old woman, previously healthy, presents a picture of right facial weakness in the course of about 20 hours, so she can not close her right eye and her mouth has been twisted. Refers to see double with the right lateral gaze. Which of the following diagnostic possibilities seems most likely? 
 Options:  <1> Bell's palsy <2> Ramsay-Hunt syndrome (herpetic facial paralysis). <3> Sarcoidosis <4> Left sylvian infarction with involvement of the rolandic operculum. <5> Protuberant involvement due to an outbreak of multiple sclerosis.
5

Question: The most commonly used data to study the phylogenetic relationship between bacteria is: 
 Options:  <1> The cytosine-guanine composition of their DNA. <2> The degree of DNA-DNA hybridization. <3> The amino acid sequence of ribosomal proteins. <4> The nucleotide sequence of 16S ribosomal RNA. <5> The composition of the cell wall.

4