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 type of epidemiological study indicated to evaluate, in a population initially exempt from the health problem under study, the association between a risk factor and the onset of the disease is: 
 Options:  <1> Randomized clinical trial. <2> Quasi experimental. <3> Ecological studies <4> Cases and controls study. <5> Cohort study.
3

Question: A 17-year-old boy referred to a health center referring to a 39-degree fever of 48 hours of evolution with a sore throat. The family doctor consults the history of the patient where it does not cost any previous illness. The patient did not report cough and the examination performed by his family doctor reveals the presence of bilateral whitish tonsillar exudate and anterior cervical adenopathies enlarged and painful on palpation. What would be the treatment of choice for this patient? 
 Options:  <1> Penicillin V or amoxicillin. <2> Amoxicillin clavulanic. <3> Doxycycline <4> Ciprofloxacin <5> Metronidazole
1

Question: Mr. L. R. is a colostomy carrier. Which of the following recommendations on activities of daily life is adequate ?: 
 Options:  <1> You should avoid bathing, neither with a bag nor without it. <2> You can not do sports activities. <3> You can not wear a sash on top of the bag. <4> It is advisable that you drink plenty of fluids to avoid dehydration. <5> You should avoid sexual intercourse involving contact with the stoma area.

3