The correct options are
A A plateau is an elevated piece of flat land.
B An escarpment is an area where the elevation changes suddenly.
D Salakamcheruvu village is located in Singanamala mandal.
A plateau is an elevated piece of flat land, whereas an escarpment is an area where the elevation of land changes suddenly. The Salakamcheruvu tank has been dry for twenty years now. The village is located in Singanamala mandal.