In literature, tone is a very important element in the transmission of the message and the meaning of a text. This is because the message is directly linked to the feeling that the text wishes to convey and the tone is the representation of the emotion or feeling that the author wishes to present during the reading of the text.
In the excerpt shown above, we can see that there is a pleading tone, since the narrator begs God to grant her wish that Enrique be deported and return to the place where she is.
Although nr. 2 and 3 are considered to be good reasons too, the first reason is the only one that really matters, due to the importance of improving work and study opportunities in a society where only high qualified - and fluent in English - persons count. 4 is interesting from a social point of view but won´t help the individual much in his/her future career.