TASK DEFINITION: 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'.
PROBLEM: Question: What does the intersessional sampling used in observation techniques refer to: 
 Options:  <1> To the registration of relevant information between sessions. <2> To the periodicity, number and criteria of start-end of the sessions. <3> To the successive rounds of observation of the subjects to observe. <4> To the temporary selection and its interval or partial modality. <5> To the record of focal events that occur between sessions.

SOLUTION: 2

PROBLEM: Question: The BRCA-1 gene mutation is associated with a high risk of: 
 Options:  <1> Acute myocardial infarction. <2> Breast cancer <3> Alzheimer disease. <4> Parkinson's disease <5> Tay-Sach disease.

SOLUTION: 2

PROBLEM: Question: The three-dimensional structure of B-DNA: 
 Options:  <1> It is shorter and wider than the A-DNA. <2> It has around 20pb for each 360º turn of the propeller. <3> It is the most stable structure under physiological conditions. <4> It appears when the DNA is placed in a saline solution. <5> It is a left-handed helix.

SOLUTION:
3