What is the southernmost permanently settled town in the world?

Ushuaia is recognized as the southernmost permanently settled town in the world. Located on the southern coast of Argentina, Ushuaia lies at the Tierra del Fuego archipelago and is often referred to as "the End of the World." This distinction is attributed to its geographic position, which is notably further south than any other town with a permanent population.

The city serves as a crucial hub for Antarctic expeditions, tourism, and is known for its unique blend of natural beauty with access to various outdoor activities, including hiking, skiing, and exploring the surrounding national parks. This combination of factors contributes to its vibrant community and significant status. The other options listed do not maintain a population as far south as Ushuaia.