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: In what type of hearing loss is the phenomenon of recruitment or recruitment characteristic? 
 Options:  <1> Transmission hearing loss. <2> Mixed hearing loss. <3> Central hearing loss. <4> Retrocochlear hearing loss. <5> Cochlear hearing loss.

SOLUTION: 5

PROBLEM: Question: Separations by capillary zone electropheresis (CZE) are characterized in that the electrophoretic medium: 
 Options:  <1> It is always formed by 1.0 M HCl. <2> It is always formed by NH3 1.0 M. <3> It is homogeneous throughout the capillary. <4> It is not homogeneous throughout the capillary. <5> It has a pH gradient throughout the entire capillary.

SOLUTION: 3

PROBLEM: Question: In mass spectrometry, the most common fragmentation pattern is the break in α, which cleaves the alkyl bond adjacent to the carbonyl to give: 
 Options:  <1> The corresponding acyl cation and an alkyl radical. <2> The corresponding acyl anion and an alkyl radical. <3> The corresponding acyl radical and an alkyl radical. <4> The corresponding acyl cation and an alkyl cation. <5> The corresponding acyl anion and an alkyl anion.

SOLUTION:
1