I believe the answer would be B, to inform readers that the code talkers were recognised by the US government for their critical work during wartime. This sentence in no way wants to entertain readers with a story about code talkers since the paragraph gives off more information than the purpose to entertain. This paragraph explains the code talkers' place in the war and gives info that the code talkers were recognised for their work and were rewarded by the multiple persons of the US government (the presidents). This paragraph doesn't focus on the history of US presidents, and it doesn't want to persuade the reader to create code, that would be a persuasive paragraph. Not an informational paragraph.
Julia in George Orwell's book.
C. Jack helped his neighbor repair the light fixture attached to the ceiling.
"Attached to the ceiling" (the participial phrase) refers to the light fixture, and should be placed directly after it.
Alert the boss. Or call someone who knows how to repair it.
A. It says in the passage that they declined the preposition