Deccan Trap is related to what?

Correct answer: Volcanic lava flows

Option C, volcanic lava flows, is correct. The Deccan Trap is a vast volcanic formation covering a large part of peninsular India. It developed when repeated and very extensive eruptions released basaltic lava that spread across the land in successive sheets. As each flow cooled and hardened, it formed a layer of dark basaltic rock. Over a long period, weathering and erosion exposed the edges of these stacked layers, producing the characteristic step-like or terraced topography. The word “trap” is associated with a term meaning stair or step. Sea corals form marine structures, river flood plains are deposited by flowing water, and glacial lakes are formed by ice-related processes; none explains the basalt layers of the Deccan Trap. Therefore option C is unambiguous.