Answer: Option [A]The correct answer is Fold mountains. Fold mountains are the most common type of mountain in the world. The rugged, soaring heights of the Himalayas, Andes, and Alps are all active fold mountains.
Answer: Option [C]A lagoon is formed by Wave erosion. Deposition of materials occurs at the places where the effect of waves is less. Landforms like beaches, sand bars, lagoons are formed due to depositional work of the sea waves.
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Answer: Option [B]Islands are formed by Wave action. The formation of barrier islands is most likely the result of wind and wave action. Wind and waves collect sand and sediment from beaches, the sea floor, river deltas and estuaries, and build up barrier islands.
Answer: Option [D]Hanging valleys are very common in Snow covered area. A hanging valley is a smaller side valley left 'hanging' above the main U-shaped valley formed by a tributary glacier. A hanging valley can be termed as an intermediately valley above another valley in an elevated zone. These are mostly found in glaciated areas.
Answer: Option [C]A fast flowing river forms Flood-plains. A floodplain is a generally flat area of land next to a river or stream. It stretches from the banks of the river to the outer edges of the valley.
