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: Which of the following insulins is used for the basal dose in a diabetic patient? 
 Options:  <1> Lispro. <2> Aspart. <3> Metformin. <4> Glargine <5> Regular.

SOLUTION: 4

PROBLEM: Question: In a determination of the activity of an enzyme, the depletion of the substrate: 
 Options:  <1> It is essential for most trials. <2> It may give falsely low results in sera with high enzymatic activity. <3> It occurs when the reagent is finished. <4> It occurs due to a defect in the spectrophotometer. <5> It can lead to falsely elevated results in sera with high enzymatic activity.

SOLUTION: 2

PROBLEM: Question: In a potentiometry at zero intensity the electrode: 
 Options:  <1> Indicator always measures balance potentials. <2> Indicator measures the half-wave potential. <3> Indicator can measure a mixed potential. <4> Reference is always a calomel platinum electrode. <5> Indicator is always a platinum electrode.

SOLUTION:
3