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'.

[Q]: Question: The innate immune response to viruses is mainly mediated by lymphocytes: 
 Options:  <1> B1 <2> Th1. <3> Cytolytic T <4> NK <5> Tγδ.
[A]: 4


[Q]: Question: What degree of mental disability corresponds to an IQ of thirty-six? 
 Options:  <1> Mental disability limit. <2> Mild mental disability. <3> Moderate mental disability. <4> Severe mental disability. <5> Deep mental disability.
[A]: 3


[Q]: Question: In a 14-year-old patient with Down syndrome who presents with nucalgia (normal neurological examination) and is going to be subjected to general anesthesia (orotracheal intubation) for elective abdominal surgery, the following should be ruled out: 
 Options:  <1> Atloaxoid instability. <2> Tracheoesophageal fistulas. <3> Brain tumor. <4> Vocal cord hyperplasia. <5> Hydrocephalus
[A]:
1