How do Milo, Tock, and the Humbug get off the island of Conclusions?

• A. By swimming through the Sea of Knowledge
• B. By climbing a ladder
• C. By using a rope
• D. By walking off the island

Answer: (A)

The idea being tested is how the characters physically exit the Island of Conclusions, which in the story is surrounded by water and connected to the rest of the world by crossing that water. They leave by swimming through the Sea of Knowledge, a literal body of water that lies between the island and the rest of the land. The act of swimming through this sea fits the scene and the book’s playful use of place names—the Sea of Knowledge represents moving through learning to reach new places and ideas.

So why this is the best answer: the narrative describes no ladder, rope, or land path off the island. There isn’t a walking route or a climb to be had; the only practical exit shown is crossing the water, which Milo, Tock, and the Humbug do by swimming through the Sea of Knowledge to continue their journey.