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 acute coronary syndrome with ST-segment elevation, heparin is used because: 
 Options:  <1> It is fibrinolytic, since it destroys the thrombus. <2> It inhibits the formation of more thrombi and prevents their recurrence. <3> It inhibits platelet aggregation. <4> Restores the patency of the coronary artery immediately. <5> All the previous answers are correct.

SOLUTION: 2

PROBLEM: Question: It is a stop codon for translation: 
 Options:  <1> AUG. <2> UAU <3> UGA <4> UAC. <5> UGU

SOLUTION: 3

PROBLEM: Question: What kind of learning manifests itself without obvious reinforcement? 
 Options:  <1> Latent learning. <2> Vicarial learning. <3> Learning by insight. <4> Instrumental learning <5> None.

SOLUTION:
1