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: The oxygen of the ethers as that of the alcohols can be protonated to generate:
Options: <1> Iminium ion. <2> Alkaloxonium ions. <3> Peroxides <4> Piranos. <5> Enaminas
2

Question: Which of the following molecules has a simple covalent bond?
Options: <1> C2. <2> N 2 <3> O 2 <4> O 3. <5> F 2
5

Question: 50-year-old woman who for 1 month has a depressed mood, anhedonia, memory loss, easy crying, loss of energy, sense of worthlessness and guilt, marked weight loss and early awakening, as well as inability to perform their tasks usual at home. In separation proceedings for 3 months. Point out the most appropriate diagnosis:
Options: <1> Dysthymia <2> Pseudodementia <3> Depressive adaptive disorder. <4> Episode of major depression. <5> Minor depression
4