Option-1: Rainfall is seasonal and scanty. This could contribute to the creation of inland drainage, as the limited amount of rainfall might not be enough to form large rivers or lakes. However, this option alone does not fully explain why Asia has large areas of inland drainage.

Option-2: There is a number of inter-montane plateaus. This option correctly explains why Asia has large areas of inland drainage. Inter-montane plateaus are elevated regions located between mountain ranges. These plateaus often have internal drainage systems where the water flows towards closed basins instead of flowing towards the ocean. Since Asia has a significant number of these plateaus, it results in the formation of large areas of inland drainage.

Option-3: River channels are obstructed by lava flows. While lava flows can obstruct river channels and redirect the flow of water, this explanation alone does not account for the extensive areas of inland drainage in Asia. It is more of a localized phenomenon rather than a continent-wide pattern.

Option-4: It is a very large continent. While being a large continent might contribute to the presence of inland drainage, it does not explain the specific reason why Asia has large areas of inland drainage. The size of the continent alone does not determine the presence or