The correct options are
A Rain is unreliable in this area.
B Tanks tap water that flows from seasonal streams.
C Tanks are suitable in plateaus due to natural depressions.
Tanks are common sources of water in Salakamcheruvu because it stores rainwater and water that flows from seasonal streams. Tanks are suitable in plateaus due to the natural depressions and small hills. Tanks, unlike wells, store water that flows at the surface-level.