Answer: Question 15 is asking you to submit your character sketch. Character sketch: Demonstrate the personality, habits, Physical appearance, and even how they react to certain things(Stress, people, etc.) And its asking to make sure you have no mistakes, and to make sure that everything is made uniform or whole(Logical and consistent). Sorry if i'm wrong.
I believe you should omit Sport because the sentence still makes sense that in Argentina Soccer is everyone's favourite.
In my opinion, from this excerpt, the only thing that can be seen is "suffering". He had absolutely nothing in his youngest years, he was as poor as a church mouse, but not only that, he apparently had nobody to be there for him. To me it shows a great deal of pain and sadness, and that is evident in this paragraph.
I think they're all good but C sounds the most sophisticated