A allegory is a story in which the characters, objects, and plait events represent abstract concepts, having more than one layer of meaning. During research, I noticed many people put down fable for this exact question. That will be wrong. A fable has animals, creatures, and plants as characters. The correct answer will be C, allegory.
I might be wrong, but I think it's a verb. :^]
Answer: (D)
Explanation: General Burgoyne gave a message to a courier who ended up giving it to the Americans.