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: Which of the following alternatives is CORRECT in relation to the treatment of sleepwalking? 
 Options:  <1> Early intervention is recommended since it is a disorder that usually becomes chronic. <2> It does not require any intervention since the safety of the child is never in danger. <3> The technique of programmed awakenings has been used successfully. <4> The child is usually asked to draw the dreams he has during the episodes to reduce the anguish. <5> Do not try to reassure the child and take him back to bed because of the danger of waking up in that state.

A: 3
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Q: Question: What kind of validity does the degree of confidence refer to, with which it can be inferred that the cause-effect relationships between the variables of an investigation are interpretable in the sense suggested by the researcher? 
 Options:  <1> Internal validity <2> External validity <3> Discriminant validity <4> Ecological validity <5> Construct validity

A: 1
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Q: Question: Aflatoxin B1 is a natural product that owes its toxicity to a product of its metabolism, very reactive, of the nature of: 
 Options:  <1> 1,2-Diol. <2> Quinonymine <3> Epoxide <4> Α, β-unsaturated carbonyl. <5> Radical hydroperoxide.

A:
3
****