A. Tehran
B. Tokyo
C. London
D. New York
🧠 Explanation:
Tokyo was the most populous city in 2018, per the United Nations. Knowing this helps students and geography enthusiasts understand global demographics. Tokyo is key for studying urban studies or sociology in school. Learning this helps with projects or exploring city growth. It’s useful for geography classes, making it relevant for understanding populations. Knowing Tokyo’s status helps students grasp its urban significance, ensuring better comprehension for academic work or general knowledge about global cities and their impact on culture and economies.