Which genre includes stories that explain the origins of the world?

The genre that includes stories explaining the origins of the world is myths. Myths are traditional narratives that often involve gods, supernatural beings, and celestial events to convey the beliefs and values of a culture. They serve to explain complex natural phenomena, human behavior, and the origins of the world itself, often reflecting the worldview of the societies from which they originate.

In contrast, fables are usually brief stories featuring animals that convey a moral lesson. Fairytales often involve magical elements and are more focused on fantastical plots involving characters like wizards and princesses, rather than explaining the origins of the universe. Informational books provide factual content and data, focusing on teaching or presenting information rather than narrating origin stories. Thus, myths uniquely fit the criteria of providing insight into the foundational aspects of a culture's understanding of the world.