Buenos Aires is city of:

A. UK
B. Brazil
C. China
D. Argentina 

🧠 Explanation:

Buenos Aires, the capital of Argentina, is a vibrant city known for its tango and cultural richness. This city is a key topic in geography and tourism, engaging students and travelers. Understanding Buenos Aires clarifies its role as a South American hub, relevant for studying urban development and cultural heritage. Its lively atmosphere attracts those exploring global destinations, highlighting its significance in tourism and economic activity, emphasizing its place in Latin American culture and history.