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 alkali halides, MX: 
 Options:  <1> They are solids that melt below 100ºC. <2> They form crystals of intense colors. <3> They can be obtained by reaction of the M2CO3 carbonates with the aqueous solutions of the HX hydrogen halides. <4> None of them can be found in nature. <5> They are liquid at room temperature.
[A]: 3


[Q]: Question: Imagine that you are in the supermarket with your neighbor and notice that you have a bruise on your eye. What heuristic would be applied if it overestimates the possibility that it is due to a problem of abuse? 
 Options:  <1> Representativeness <2> Availability / Accessibility <3> Simulation. <4> Anchoring-Adjustment. <5> False consensus.
[A]: 2


[Q]: Question: At what stage is the person when they begin to balance the positive and negative consequences of drug use and, as a result, begin to consider stopping consumption, but basically maintain their ambivalence in this decisional balance? 
 Options:  <1> Stadium of action. <2> Contemplation stadium. <3> Relapse stadium. <4> Pre-contemplation stadium. <5> Post-relapse stadium.
[A]:
2