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'.

[EX Q]: Question: What name does the technique used in the treatment of Generalized Anxiety Disorder (GAD) in which the person is asked to assume that their worst fear is met, and then look for realistic solutions to it ?: 
 Options:  <1> Script of the worst scenario. <2> Decatastrofization. <3> Coping with uncertainty. <4> Revaluation of the threat. <5> Processing of meta-concern.
[EX A]: 2

[EX Q]: Question: In the receptor-mediated endocytosis intervenes: 
 Options:  <1> Only the clathrin. <2> Only the adaptin. <3> Adaptine and clathrin. <4> Chaperones <5> Only the proteins of the membrane.
[EX A]: 3

[EX Q]: Question: Urea: 
 Options:  <1> It is transported to the liver for elimination. <2> It is degraded to ammonium in the urea cycle. <3> It is apolar and easily forms crystals. <4> It is obtained from arginine. <5> It has two ketone groups and one amino group.
[EX A]:
4