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: Ammonia usually used in the laboratory: 
 Options:  <1> It is a pure compound, liquid at environmental temperature and pressure. <2> It is a gaseous ammonia solution in water, very diluted, because ammonia is very little soluble in water. <3> It is a solution of gaseous ammonia in water, very concentrated, because ammonia is very soluble in water. <4> It is a gaseous ammonia solution in ethanol, because pure gaseous ammonia is insoluble in water. <5> It is a saturated solution of ammonium chloride in water.

A: 3
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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.

A: 2
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Q: Question: Point out the secondary prevention measure that has been shown to be effective in colon cancer: 
 Options:  <1> Facilitate the realization of fecal occult blood test every year or biennially and / or sigmoidoscopy or colonoscopy every 5 years in people with high risk. <2> Encourage the consumption of milk and other dairy products, fish and fruits. <3> Avoid the consumption of cooked meat very made or in direct contact with the fire. <4> Avoid the consumption of tobacco and the ingestion of alcohol. <5> All the previous answers are correct.

A:
1
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