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: Observe that the liquids coming from the synthesis of chloroquine had an antibacterial activity gave rise to the discovery of the quinolones. This group of antibiotics has various characteristics such as: 
 Options:  <1> Fluoroquinolones have a smaller spectrum of activity than first-generation quinolones. <2> The second generation quinolones are very effective against anaerobes. <3> Fluoroquinolones are not effective against enterobacteria. <4> Fluoroquinolones are effective against Gram-positive but less than Gram-negative. <5> The third and fourth generation fluoroquinolones are not effective against streptococci or staphylococci.

A: 4
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Q: Question: The limitation of the therapeutic effort refers to: 
 Options:  <1> Palliative sedation <2> Assisted suicide. <3> To the rejection to the treatment. <4> To the non-therapeutic fierceness. <5> To double effect therapy.

A: 4
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Q: Question: A 82-year-old hypertensive woman on treatment with atenolol, hydrochlorothiazide and digoxin. He goes to the emergency room for atrial fibrillation and is administered verapamil i.v. Complete atrioventricular block is evidenced in ECG. What is the most likely cause of this clinical situation? 
 Options:  <1> Digitalis intoxication by pharmacokinetic interaction by verapamil. <2> Hypokalemia due to the administration of thiazide and digoxin. <3> Pharmacodynamic interaction of beta-blocker, digoxin and verapamil. <4> Hypotensive effect of the thiazide diuretic. <5> Cardiac arrhythmia due to verapamil.

A:
3
****