Which country is entirely located in the Southern Hemisphere?

Argentina is entirely located in the Southern Hemisphere, making it the correct answer to this question. The Southern Hemisphere is defined as the half of the Earth that lies south of the equator. Argentina, with its geographic boundaries extending from the tropics down to the southernmost tip of South America, is situated completely below the equatorial line.

In contrast, the other choices have territories that extend into the Northern Hemisphere. For instance, China’s vast landmass includes regions north of the equator, placing a significant portion of the country in the Northern Hemisphere. Russia, the largest country in the world, also straddles both hemispheres, with extensive areas lying north of the equator. Similarly, India is located in both hemispheres, as it has regions extending just north of the equator. Thus, these countries cannot be classified as entirely in the Southern Hemisphere, which clearly sets Argentina apart as the sole country fitting the criteria.