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: Point out the correct answer in relation to the monitoring of plasma drug concentrations:
Options: <1> Allergy reactions are related to the dose administered. <2> The extraction of the blood sample must be done once the balance of drug distribution in the organism has been reached. <3> The information provided by the analytical determination of plasma concentration is sufficient to perform the dosage individualization. <4> Only the immunoassay methods are valid for carrying out the analytical determination of the blood samples. <5> It must be done for all drugs that are administered intravenously.
[EX A]: 2

[EX Q]: Question: In relation to the hearing and balance processes, indicate which statement is correct:
Options: <1> The sounds are perceived in the organ of Corti and the balance in ampullary crests and maculae. <2> The auditory signal is processed in the cerebellum. <3> The inner ear is full of air. <4> Otoliths are composed of quartz. <5> All answers are false.
[EX A]: 1

[EX Q]: Question: People affected by chronic heart failure usually present the diagnosis of nursing Intolerance to activity related to:
Options: <1> Fear, because it is a situation that poses a potential risk to life. <2> Imbalance between the supply and oxygen demand due to the decrease in myocardial contractility. <3> Excess fluid volume due to interruption of blood flow. <4> Poor knowledge about the disease and treatment with diuretics. <5> Infection due to decreased immune response.
[EX A]:
2