Geography

Mongefossen is the highest waterfall in Europe, located in Norway, with a height of about 773 meters. The other options are either not the highest or are misspelled waterfalls.

Authoritative sources including Wikipedia and the CIA World Factbook confirm that the total area of Japan is approximately 377,973.89 square kilometers (about 377,974 km²). This matches option D (377,972 km²) closely, making it the correct answer. The other options are incorrect as they overstate the area.

The Pearl River is a major river in southern China, making China the correct answer. It is well-known for flowing through Guangdong province and the Pearl River Delta region.

Georgia is a country located on the eastern coast of the Black Sea, giving it direct access. Hungary and Slovakia are landlocked countries in Central Europe, and Greece borders the Aegean, Ionian, and Mediterranean Seas but not the Black Sea.

The Mackenzie River is the longest river system in Canada, flowing through the Northwest Territories. It is not located in Russia, the USA, or the UK, making Canada the correct answer.

Corsica is an island located in the Mediterranean Sea, south of mainland France and west of Italy. It is well known as a French territorial collectivity in this sea.

Mongolia is the only landlocked country located between China and Russia. Iran, Canada, and Pakistan are not situated between these two countries, and Canada is not landlocked.

Australia is considered the flattest continent because it has the lowest average elevation and the least mountainous terrain compared to other continents.

The Bering Strait is the narrow passage of water that separates Russia and the United States, specifically between Siberia and Alaska. It connects the Arctic Ocean to the north with the Pacific Ocean to the south.

Croatia is located in Eastern Europe and has a long coastline along the Adriatic Sea, which separates the Italian Peninsula from the Balkan Peninsula. The other seas listed do not border Croatia.