C.) South Korea would be the answer.
Honestly, google is very useful if you want to find things related to geography
Oklahoma City is the answer
Those coordinates fall on Australia.
Aye mate.
The Deccan plateau is located in C. Southern India.
Wind erosion is the main cause. And since it is the desert that wind can pick up tiny sand rock particles that slowly grind against the rock. Over time the erosion will give a jagged rock the smooth features as if it had been submerged in a river for the roughly same period of time.