What biblical story is mentioned in the Book of Genesis?

The story of Noah's Ark is indeed mentioned in the Book of Genesis, specifically in chapters 6 through 9. This narrative recounts how Noah, deemed righteous amidst a world filled with corruption, was instructed by God to build an ark to save his family and pairs of each animal species from a great flood sent to cleanse the earth. The story serves as a profound theme of judgment and mercy, showcasing God's covenant with Noah after the flood, symbolized by the rainbow. It emphasizes the importance of obedience to divine instructions and the promise of renewal and restoration after catastrophic events.

While the other options do relate to biblical accounts, they are not found in the Book of Genesis within the same context. The Exodus story is largely found in the Book of Exodus, which details the Israelites' departure from Egypt, the Tower of Babel account appears later in Genesis but is not the focus of the same significance as Noah’s story, and the Creation of the World is indeed part of Genesis but is a separate narrative distinct from the specific story of Noah.