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: The diagnostic sensitivity of an analytical magnitude for a certain disease is: 
 Options:  <1> 1 / specificity. <2> It depends on the prevalence of the disease. <3> It is the number of patients that give positive results among all possible individuals. <4> It is the quotient between the number of patients who give positive results for this magnitude and the total number of patients considered. <5> It is deducted directly from the minimum detectable value of this magnitude.
4

Question: 50-year-old man, mechanic, consulted for a two-year evolution of difficulty in handling the right hand and a feeling of stiffness in the arm. His wife notices his expressionless face and reports that he has very vivid nightmares that wake him up agitated. During the examination, rigidity was observed in the right limbs and slow walking without right arm. What is the most likely diagnosis? 
 Options:  <1> Left thalamic lacunar infarct. <2> Amyotrophic Lateral Sclerosis. <3> Parkinson's disease <4> Cervical plexopathy <5> Corticobasal degeneration.
3

Question: In the technique of atomic absorption spectrometry, the use of an electrothermal atomizer instead of the flame provides: 
 Options:  <1> Greater accuracy <2> Greater precision. <3> Greater sample consumption <4> Longer analysis times. <5> Greater sensitivity

5