The correct answer is (a) Africa.
Savannahs are a type of grassland with scattered trees and shrubs. They are found in tropical and subtropical regions around the world, but the most extensive savannahs are found in Africa. The Serengeti National Park in Tanzania is one of the most famous savannahs in the world.
Savannahs are home to a variety of animals, including elephants, lions, zebras, and giraffes. The plants that grow in savannahs are adapted to the dry climate and the frequent fires that occur in these ecosystems.
(b) Asia is home to a variety of ecosystems, including deserts, forests, and grasslands. However, savannahs are not as widespread in Asia as they are in Africa.
(c) North America is home to a variety of ecosystems, including forests, grasslands, and deserts. However, savannahs are not as widespread in North America as they are in Africa.
(d) South America is home to a variety of ecosystems, including forests, grasslands, and deserts. However, savannahs are not as widespread in South America as they are in Africa.