The correct answer to the question is option 3, Savannah. A tropical grassland is a type of biome characterized by tall grasses and scattered trees. It is found in regions with a warm climate and seasonal rainfall. The Savannah is a specific type of tropical grassland that is known for its extensive grassy plains, scattered trees, and a lack of dense forest cover. It is typically found in regions such as Africa, South America, and Australia. Pampas, option 1, refers to a type of grassland found mainly in South America, particularly in Argentina and Uruguay. Lianas, option 2, are climbing vines found in tropical rainforests and not specifically associated with grasslands. Veld, option 4, is a term used to describe the grassy plains in southern Africa.