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 organometallic compounds are derivatives: 
 Options:  <1> With a radical nature. <2> With covalent bonds between carbon atoms and metal atoms. <3> With electronic deficit and electrophilic character. <4> Practically not reactive. <5> With essentially reducing character.
2

Question: The placenta is a derivative of: 
 Options:  <1> The zona pellucida. <2> The trophoblast. <3> The ectoderm <4> The mesoderm <5> The primitive line.
2

Question: Social phobia is a problem: 
 Options:  <1> Infrequent in the general population (less than 1%). <2> More frequent among the male population than in the female population. <3> More frequent among the female population than the male population. <4> That is given equally in both sexes. <5> More frequent after the 25 years than before that age.

3