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: Consider Input: Question: A study is being conducted in a health center to determine the effect of exposure to tobacco smoke in children of smoking parents. For this purpose, a group of healthy children between 3 and 7 years old whose parents are smokers is selected and at the same time an equal number of children whose parents are non-smokers are selected in the same center. A year later, the appearance of respiratory diseases during that year will be investigated in both groups. Indicate the correct answer: 
 Options:  <1> The study design is a prospective cohort. <2> The study design is cases and controls. <3> The study design follows a qualitative methodology. <4> The study is experimental. <5> The type of design used is efficient to study rare diseases.

Output: 1


Input: Consider Input: Question: The parents of a 2-year-old girl consult because they are concerned about their daughter's development. They have observed that approximately from 18 months, their behavior is different from that of other children of their age. Until then, they had attributed their limited interaction to the fact that they were becoming more independent, and the lack of language development, to which they were not yet enrolled. In the consultation you observe that the girl does not respond when she calls her by her name, shows little eye contact, performs vocalizations without communicative intention, and does not look at where the parents point her. Given these findings, all of the following statements are true, EXCEPT one: 
 Options:  <1> Parents should be reassured, recommended schooling as soon as possible, and arrange a follow-up in 3 months. <2> The most likely diagnosis is autistic spectrum disorder. <3> A diagnostic evaluation must be carried out by a team with experience in autism. <4> Appropriate early intervention is recommended. <5> The origin of the disorder is multifactorial.

Output: 1


Input: Consider Input: Question: ADH increases the osmolality of the renal interstitial medium because it increases: 
 Options:  <1> The permeability to urea in the collector tube. <2> The water permeability of the ascending loop of Henle. <3> The flow in the straight vessels. <4> The reabsorption of NaCl in the collecting tubule. <5> The renal excretion of water.


Output: 1