Final answer:
The southernmost city in the world, located in Argentina's Tierra del Fuego province, is Ushuaia. It is known for its stunning landscape, proximity to Antarctica, and unique blend of cultures.
Step-by-step explanation:
The southernmost city in the world, located in Argentina's Tierra del Fuego province, is Ushuaia (B). Set against the backdrop of the Andes Mountains and the Beagle Channel, Ushuaia serves as a gateway to Antarctic expeditions and has a reputation for breathtaking natural beauty. Argentina is a country of geographical extremes, with the towering Mount Aconcagua and the sub-sea-level Laguna del Carbon, showcasing the diverse landscapes within its borders. Argentina's cultural heritage, especially in vibrant cities like Buenos Aires, blends Old World European customs with New World Latin American traditions, creating a unique culture.