Geography

The Ural Mountains and the Ural River are commonly recognized as part of the boundary between Asia and Europe. Additionally, the Caspian Sea and the Caucasus Mountains also form natural boundaries between the two continents. Therefore, both options A and B correctly identify boundary points, making option C the correct choice.

The Gulf of Carpentaria is a large, shallow sea enclosed on three sides by northern Australia, making Australia the correct answer.

Nuuk is the capital and largest city of Greenland, which is an autonomous territory within the Kingdom of Denmark. It is not related to New Guinea, Malagasy (Madagascar), or Fiji.

The Black Sea is a marginal sea of the Atlantic Ocean basin, connected through the Mediterranean Sea. Therefore, the correct answer is Atlantic.

Rakaposhi Glacier is located in the Astore District of Gilgit-Baltistan. It is part of the Rakaposhi mountain area, which is well-known in the Astore region.

The Gulf of Bothnia is the northernmost arm of the Baltic Sea, located between Finland and Sweden, making it the correct answer. The other options are different gulfs located elsewhere in Europe.

The Baltic states Estonia, Latvia, and Lithuania are located on the eastern coast of the Baltic Sea, as the sea lies to their west.

The Don River is a major river in Russia, flowing into the Sea of Azov. It is well-known geographically as one of Russia's significant rivers, making option D the correct answer.

The Horn of Africa is a peninsula in East Africa that includes countries such as Somalia, Ethiopia, Eritrea, and Djibouti. Among the options given, Somalia is the country that is part of the Horn of Africa.

The theory of continental drift was proposed by Alfred Wegener, who suggested that continents were once joined and have drifted apart over time.