Which of the following is a mythological context for the Spartoi's existence?

The Spartoi, often referred to as the "sown men," have their origins related to the mythological context of the Battles of Thebes. According to Greek mythology, the Spartoi were warriors that sprang from the ground where the dragon's teeth were planted by Cadmus, the founder of Thebes. This event was pivotal in the founding myths of the city of Thebes and represents themes of fertility and conflict, which are central to the story of its founding and the subsequent challenges faced by its inhabitants.

In the myth, Cadmus was instructed by the Oracle of Delphi to find a new city, and after defeating the dragon guarding a sacred spring, he sowed its teeth into the ground. From these teeth, the Spartoi emerged, and they played a crucial role in the battles associated with Theban conflicts. This directly ties their existence to the mythological backdrop of Thebes rather than to other mythological narratives such as the Trojan War, the Quest for the Golden Fleece, or the Birth of Rome, which center around different characters and themes.