Which example best states an argument rather than an explanation?

A. The story of Odysseus is a tale of many battles in which the hero and his men slaughter armies and entire cities that they pass along their route to their home.
B. In the ancient world, violence was part of everyday life. Enormous armies marched on foot to fight with other armies in hand-to-hand combat to the death.
C. Readers should not judge Odysseus or the Cyclops for their violent actions. The fact is that they existed in an ancient world that greatly respected victors.
D. Many areas of the ancient world were still uncharted. The people who dwelled in those regions constantly needed to guard their land and their animals.