The correct options are
B This region is marked by hillocks, with flat areas between them.
C This region receives very low rainfall.
D This region is rocky and has thin soil.
Some significant aspects of the plateau region of Kadapa and Anantapur districts are that it is marked by small hills and hill ranges, with flat areas being present in between them. This region receives less rainfall and is rocky in nature. It has thin soil, and therefore, cultivation and settlement are sparse.