The massive, densely populated metropolitan area of Tokyo serves as the capital city of which island nation in East Asia? A. South Korea B. Vietnam C. Philippines D. Japan Check Answer 💡 Explanation: Tokyo is the official capital and the world's most populous metropolitan area, situated on the eastern coast of Japan's main island, Honshu. 📚 Topics: Countries and Capitals Geography 💡 Found this helpful? Share with friends! Share Tweet WhatsApp Share