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'.

Question: According to the phenomenon of social facilitation when a person develops a task poorly learned in the presence of others, the execution of said task:
Options: <1> It improves slightly. <2> It improves substantively. <3> It does not change. <4> Gets worse. <5> It is not predictable.
4

Question: Reactions in which there are no intermediates are described as:
Options: <1> Concerted. <2> Polar <3> Radicals <4> Homolitic <5> Heterolithic
1

Question: A 56-year-old woman presents, after a casual fall to the floor, pain, deformity and increased volume in the left arm, with impossibility for the dorsal flexion of the hand. What is the most likely diagnosis?
Options: <1> Trocheter fracture in the left humerus. <2> Diaphyseal fracture of the left humerus with radial nerve injury. <3> Supraconcondylar fracture of the humeral palate with median nerve injury. <4> Fracture of the anatomical neck of the humerus with radial nerve injury. <5> Fracture of displaced epitrochlea with ulnar nerve injury.
2