The tropical grasslands of Africa are known as

Tropical grasslands are known by different names in different parts of the world. In Africa, the tropical grasslands are called 'savannas' - characterized by scattered trees and a continuous grass layer, supporting diverse wildlife like zebras, elephants, and lions. Options A, C, and D are incorrect because: 'steppes' are temperate grasslands found in Eurasia (like in Central Asia and Eastern Europe), 'pampas' are the fertile grasslands of South America (mainly Argentina), and 'downs' refer to grassland hills in southeastern England. Thus, 'Savannas' is the correct answer as it is the specific term for African tropical grasslands.