UPSC Civil Services Model Paper 4

The Jaintia, Khasi, and Garo hills of Meghalaya are largely made up of steep slopes and generally rocky terrain where the soil has low water retention capacity and where the use of groundwater channels is impossible. So, option 2 is correct.
Water can be directed using pipes, but it can be expensive in a hilly terrain for tribals. So, option 2 is NOT correct.
Since the soil has low water retention capacity, water stagnation and logging cannot take place at large scale levels. So, option 4 is NOT correct.