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 Q]: Question: The reaction of Wolff-Kishner is one: 
 Options:  <1> Oxidation of carbonyls to give acids. <2> Reduction of carbonyls to alcohols. <3> Deoxygenation of carbonyls that takes place in an acid medium. <4> Deoxygenation of carbonyls that is carried out in an alkaline medium. <5> Carbonyl deoxygenation performed in neutral medium.
[EX A]: 4

[EX Q]: Question: What is the common denominator of well-established psychological treatments for childhood phobias ?: 
 Options:  <1> The change of beliefs regarding the dangerousness of the phobic stimulus. <2> The induction of a feeling of relaxation or well-being in the presence of the phobic stimulus. <3> The interaction of the therapist with the phobic stimulus. <4> The use of coping self-instructions. <5> The gradual relationship in vivo with the phobic stimulus.
[EX A]: 5

[EX Q]: Question: Question linked to image nº14 Suppose that the patient does not refer any family history of interest, has never taken illicit drugs or receives usual medical treatment. An analysis performed in a private mutual shows a microcytic and hypochromic anemia, a normal thyroid function, a serology for HIV negative and a determination of arsenic also negative. The chest x-ray is normal. To continue the study, numerous tests could be carried out. Which do you think could help us more at this time? 
 Options:  <1> A bone marrow aspirate. <2> A complete immunological study with ANA, ANCA and complement. <3> I would not do more tests immediately and follow the clinical evolution for a month. <4> A fibrogastroscopy. <5> A biopsy of the plantar lesion.
[EX A]:
4