What is the general feature of the Terai region?

Correct answer: Wet and marshy region

Direct answer: Option B is correct. The Terai is a wet, marshy belt lying south of the Bhabar region. Rivers that disappear into the porous pebbles of Bhabar re-emerge in the Terai, so the ground becomes moist and waterlogged. This explains why the region traditionally had marshes and dense vegetation. Option A is wrong because a dry sandy area describes desert conditions, not the normal Terai character. Option B works because wetness and marshes are its defining general features. Option C is wrong because the Terai is not a completely rocky plateau; it is a low depositional belt. Option D is wrong because marine coral regions occur in particular seas and islands, not in this Himalayan foothill belt. Do not confuse Bhabar and Terai: Bhabar is the coarse, pebbly belt where streams may sink, while Terai is the wetter belt where streams reappear. Memory cue: “Bhabar hides water; Terai brings it back.”