far is the word I think so!
I think it is C. A man but i am not so sure
It seems that you have missed the necessary options to answer this question but anyway, here is the answer. The widespread problem that Ishmael Beah attempts to reveal in his memoir A Long Way Gone is the <span>use of children and teenagers as soldiers in armed conflict. Hope this answers your question.</span>
Prepositions ususally stand before nouns, in this case "on" is the preposition.