instruction:
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:
Question: In relation to vaccines, indicate the correct option: 
 Options:  <1> The immunization schedule should be suspended during the summer months. <2> The vaccination calendar is fixed and immovable. <3> The appropriate storage temperature is between 2 and 8C. <4> Influenza vaccine should only be given to people older than 14 years. <5> All the previous answers are correct.
answer:
3


question:
Question: Sodium metal reacts violently with water because Na: 
 Options:  <1> Oxidize the water to oxygen, and the reaction is very exothermic. <2> It reduces the water to hydrogen, and the reaction is very exothermic. <3> Oxidizes the water to oxygen, and when a gas is generated, the entropy increases enormously. <4> It reduces the water to hydrogen, and the reaction is very endothermic. <5> It combines with water giving rise to an explosive hydride.
answer:
2


question:
Question: Choose among the following phrases the one that most appropriately defines a concerted reaction: 
 Options:  <1> Reaction in a single stage in which all the links that are formed and break do so at the same time. <2> Reaction in several stages in which all the links that are formed and break do so at the same time in the slowest stage. <3> Reaction in which the speed of all stages is identical. <4> It is an equilibrium reaction in which K = 1. <5> Reaction in several stages in which all the links that are formed and break do so at the same time in the fastest stage.
answer:

1