Which is the largest and deepest ocean on Earth? By Kalsoom Tahir 🌐 Source Geography Reference Library ✅ Fact Checked 📅 Last Updated 13 Aug 2026 A. Atlantic Ocean B. Indian Ocean C. Pacific Ocean D. Arctic Ocean Check Answer 💡 Explanation: The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It covers about one-third of the planet's surface and contains the Mariana Trench, the deepest known point in the ocean. 📚 Topics: Geography Water Bodies