Respuesta :
C. The major river valleys of mainland Southeast Asia are sparsely populated.
The major river valleys of mainland Southeast Asia are sparsely populated is the statements about the Southeast Asian Realm is false. Southeast Asia is also the buffer zone with a shatter belt.
What are the four main rivers of the mainland?
The three longest rivers are situated in the mainland the three rivers are Mekong, Red, and Irrawaddy and have beginnings in the broad elevations of Himalayan reaches of China. The Mekong is the largest river of mainland Southeast Asia.
Thus, option C is correct.
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