A fact is a statement that can be proven, and it is no biased by the opinion of the writer. Moreover, a fact is very direct, and it does not rely on the use of figures of speech that can affect the clear understanding of the sentence. Hence, sentences D and A are not facts because they are biased by the opinion of the writer; sentence B is not correct because it is a hyperbole. The sentence that represents a fact and that can be proven is C: "Our brethren are already in the field!"